Ancient_economic_thought

Schools of economics



History of economic thought



Pre-modern



Early economic thought



Early Modern



Mercantilism · Physiocrats



Modern



Classical Economics 

English historical school ·
German historical school 

Socialist economics · Neoclassical economics

Lausanne school · Austrian school



Twentieth-century



Institutional economics · Stockholm school 
Keynesian economics · Chicago school



In the history of economic thought, early economic thought refers to ideas from before and during the Middle Ages. The earliest discussions of economics date back to ancient times, such as Chanakya's Arthashastra or Xenophon's Oeconomicus, and continues through the religious-based ideas of Jewish thought, the Scholastics, and medieval Islamic scholars. In those early times, and until the industrial revolution, economics was not a separate discipline but part of philosophy. Religious tenets and a concern for morality and ethics played a significant role in the views of early theorists.
The concerns of those early economists involved a number of issues which they held in common, the answers to which are the basis of the structure of well-functioning societies today as much as in those early times. These include how to make markets, taxation policies, and other monetary instruments transparent and free from corruption; when is profit permissible (and how much) based on the labors of others, such as in the case of merchants, the charging of interest and when does it become unacceptable usury; and other practices that would otherwise destroy the well-being of ordinary law-abiding people on which strong and unified states were built.

Contents

1 General principle
2 Near East
3 Europe

3.1 Xenophon
3.2 Aristotle
3.3 Roman law
3.4 Jewish thought
3.5 The Scholastics


4 India

4.1 Chanakya


5 China

5.1 Qin Shi Huang
5.2 Wang Anshi


6 Medieval Islamic economic thought

6.1 Zaid bin 'Ali
6.2 Abu Hanifa
6.3 Abu Yusuf
6.4 Ibn Khaldun


7 Conclusion
8 References
9 Credits



While their ideas were not always complete, and in some cases involved long-lasting debates rather than answers, much similarity can be found in their efforts. It is also of note that early economic thinking, closely tied to philosophical and/or religious tenets, generally took into account the welfare of the common man, the worker, rather than seeking ways to benefit a few elite individuals, themselves or others.

General principle

Did you know?Discussions of economics have existed since ancient times but it was not a separate discipline until the nineteenth century
Economics was not considered a separate discipline until the nineteenth century. Still, economic thought has existed from the ancient world right up to the present day:

Men undoubtedly behaved economically for many centuries before they undertook to analyze economic behavior and arrive at explanatory principles. At first, this analysis was more implicit than explicit, more inarticulate than articulate, and more philosophical and political in mode than economic. But in the face of ubiquitous and inevitable scarcity, the study, in various forms and for various proximate purposes, went on. (Spengler and Allen 1960:2)
The earliest writings were not clearly separated from other discussions, particularly those of justice and morality. This reflects the reality of early societies—as Karl Polanyi noted, early economies were "embedded economies," not separate and certainly not dominant institutions (Eggleston 2008).
Early economic thought was in general hostile to enrichment and regarded wealth as inner wealth, rather than external or monetary riches. This attitude was consistent with an economy that was essentially closed and static, based on agriculture and on slave work. However, it greatly restrained economic development in ancient societies.

Near East
 The upper part of the stele of Hammurabi's code of laws
Economic organization in the earliest civilizations of the Middle Eastern fertile crescent was driven by the need to efficiently grow crops in river basins. The Euphrates and Nile valleys were homes to the earliest examples of codified measurements written in base 60 and Egyptian fractions. Egyptian keepers of royal granaries, and absentee Egyptian landowners reported in the Heqanakht papyri. Historians of this period note that the major tool of accounting for agrarian societies, the scales used to measure grain inventory, reflected dual religious and ethical symbolic meanings (Lowry 2003:12.)
The Erlenmeyer tablets give a picture of Sumerian production in the Euphrates Valley around 2,200-2,100 B.C.E., and show an understanding of the relationship between grain and labor inputs (valued in "female labor days") and outputs and an emphasis on efficiency. Egyptians measured work output in man-days.
The development of sophisticated economic administration continued in the Euphrates and Nile valleys during the Babylonian Empire and Egyptian Empires when trading units spread through the Near East within monetary systems. Egyptian fraction and base 60 monetary units were extended in use and diversity to Greek, early Islamic culture, and medieval cultures. By 1202 C.E. Fibonacci's use of zero and Vedic-Islamic numerals motivated Europeans to apply zero as an exponent, birthing modern decimals 350 years later.
The city-states of Sumer developed a trade and market economy based originally on the commodity money of the Shekel which was a certain weight measure of barley, while the Babylonians and their city state neighbors later developed the earliest system of economics using a metric of various commodities, that was fixed in a legal code. The early law codes from Sumer could be considered the first (written) economic formula, and had many attributes still in use in the current price system today... such as codified amounts of money for business deals (interest rates), fines in money for 'wrong doing', inheritance rules, laws concerning how private property is to be taxed or divided, and so forth (Horne 1915).
Earlier collections of (written) laws, just prior to Hammurabi, that could also be considered rules and regulations as to economic law for their cities include the codex of Ur-Nammu, king of Ur (ca. 2050 B.C.E.), the Codex of Eshnunna (ca. 1930 B.C.E.) and the codex of Lipit-Ishtar of Isin (ca. 1870 B.C.E.).

Europe
Some prominent classical scholars have asserted that relevant economic thought did not arise in Europe until the Enlightenment (Meikle (1997), Finley (1970)), as early economic thought was based on metaphysical principles which are incommensurate with contemporary dominant economic theories such as neo-classical economics (Lowry 2003).
However, several ancient Greek and Roman thinkers made various economic observations, starting with Hesiod in eighth century B.C.E. Being a farmer, Hesiod was interested in efficiency—an economic concept measured as a ratio of outputs to inputs. Maximum efficiency is taken to be achieving the largest possible output with a given input. Hesiod lived in a place that was not exactly conducive to agriculture, a "sorry place ... bad in winter, hard in summer, never good" (Rand 1911). Because of this, he understood and wanted to help alleviate the problem of scarcity on earth. In Works and Days, he noted that because of scarcity time, labor, and production goods had to be carefully allocated. He advocated more freedom in land owning and less stringent rules on the payment of interest. When one considers the audience for whom he wrote, it can be understood that Hesiod wanted to help alleviate the problems of hunger and debt. (Rand 1911: 131-165).
Many other Greek writings (in addition to those of Aristotle and Xenophon discussed below) show understanding of sophisticated economic concepts. For instance, a form of Gresham’s Law is presented in Aristophanes’ Frogs, and beyond Plato's application of sophisticated mathematical advances influenced by the Pythagoreans is his appreciation of fiat money in his Laws (742a–b) and in the pseudo-Platonic dialogue, Eryxias (Lowry 2003 :23). Bryson of Heraclea was a neo-platonic who is cited as having heavily influenced early Muslim economic scholarship (Spengler 1964).
In Roman times, the law clearly took into account important economic analyses. Later, the Scholastic theologians took on the role of guiding society, and their writings included economic aspects of life. In this area they built on Greek thought as revived by medieval Muslim scholars.

Xenophon
Main article: Xenophon
 Xenophon, Greek historian
The influence of Babylonian and Persian thought on Greek administrative economics is present in the work of Greek historian Xenophon. Xenophon’s writing, some four hundred years after Hesiod, took the concepts of efficient management much farther than Hesiod and applied them at the level of the household, the producer, the military, and the public administrator. This brought him insights into how efficiency can be improved by practicing a division of labor. Attention to the division of labor was continued by other Greek writers, including Aristotle, and, later, by the Scholastics.
Discussion of economic principles are especially present in Oeconomicus, Cyropaedia his biography of Cyrus the Great, Hiero, and Ways and Means (Lowry 2003:14.) Hiero is a minor work which includes discussion of leaders stimulating private production and technology through various means including public recognition and prizes. Ways and Means is a short treatise on economic development, and showed an understanding of the importance of taking advantage of economies of scale and advocated laws promoting foreign merchants.
The Oeconomicus discusses the administration of agricultural land. The Greek word oikonomia (οἰκονομία) designates mainly the oikos (οἶκος), meaning the home or hearth. Thus Xenophon's Oeconomicus is concerned with household management and agriculture. The Greeks had no precise term to designate the processes of production and exchange. In this work, subjective personal value of goods is analyzed and compared with exchange value. Xenophon uses the example of a horse, which may be of no use to a person who does not know how to handle it, but still has exchange value (Oeconomicus I: 5-6, 8). Although this broadens the idea of value based on individual use to a more general social concept of value that comes through exchange, it is not yet a market theory of value (Lowry 2003:17.)
In Cyropaedia Xenophon presents what in hindsight can be seen as the foundation for a theory of fair exchange in the market. In one anecdote, the young Cyrus is to judge the fairness of an exchange made between a tall and a short boy. The tall boy forces the pair to exchange tunics, because the tall boy's tunic is too short, shorter than the short boy's, which is too long for him. Cyrus rules the exchange fair because it results in a better fit for both boys. Cyrus' mentors were not pleased with Cyrus' basing his decision on the values involved, as a just exchange must be voluntary (Cyropaedia I(3): 15–17). Later in the biography, Xenophon discusses the concept of division of labor, referencing specialized cooks and workers in a shoemaking shop (Cyropaedia VIII(2): 5–6). Scholars have noted that Adam Smith's early notes about this concept "read like a paraphrase of Xenophon's discussion of the role of the carpenter as a 'jack of all trades' in small cities and as a specialist in large cities" (Lowry 2003: 18). Xenophon also presents an example of mutual advantage from exchange in a story about Cyrus coordinating an exchange of surplus farmland from Armenians, who were herders, and surplus grazing land from Chaldeans, who were farmers (Cyropaedia III(2): 17–33).

Aristotle
Main article: Aristotle
 Plato (left) and Aristotle (right), a detail of The School of Athens, a fresco by Raphael. Aristotle is holding a copy of his Nicomachean Ethics.
Aristotle's main contributions to economic thinking concern the exchange of commodities and the use of money in this exchange. He regarded economic activity as the way to realize well-being within the idea city-state—a just and harmonious community (Eggleston 2008). People's needs, he said, are moderate, but people's desires are limitless. Hence the production of commodities to satisfy needs was right and natural, whereas the production of goods in an attempt to satisfy unlimited desires was unnatural. Aristotle conceded that when goods are produced to be sold in a market, it can be difficult to determine if this activity is satisfying needs or inordinate desires; but he assumed that if a market exchange is in the form of barter, it is made to satisfy natural needs and no economic gain is intended.
Allocation of scarce resources was, therefore, a moral issue to Aristotle, and in Book I of his Politics, Aristotle expressed that consumption was the objective of production, and the surplus should be allocated to the rearing of children, and personal satiation ought to be the natural limit of consumption. (To Aristotle, this question was a moral one: in his era child mortality was high.) In transactions, Aristotle used the labels of "natural" and "unnatural." Natural transactions were related to the satisfaction of needs and yielded wealth that was limited in quantity by the purpose it served. Un-natural transactions aimed at monetary gain and the wealth they yielded was potentially without limits. He explained the un-natural wealth had no limits because it became an end in itself rather than a means to another end—satisfaction of needs. For Aristotle, wealth was an instrument for the achievement of happiness, but was never to become an end in itself. This distinction is the basis for Aristotle's moral rejection of usury (Lowry 2003:15.)
Aristotle's Nicomachean Ethics, particularly Book V, has been called the most economically provocative analytic writing in ancient Greece (Lowry 2003:20). Therein, Aristotle discussed justice in distribution and exchange. Still considering isolated exchanges rather than markets, Aristotle sought to discuss just exchange prices between individuals with different subjective values for their goods. Aristotle suggested three different proportions to analyze distributive, corrective, and reciprocal or exchange transactions: the arithmetic, the geometric, and the harmonic. The harmonic proportion is interesting, as it implies a strong commitment to the subjective values of the traders. Sixth century C.E. philosopher Boethius used the example of 16 as the harmonic mean of 10 and 40. 16 is the same percentage larger than 10 as it is smaller than 40 (60 percent of 10 is 6, while 60 percent of 40 is 24). Thus if two bargainers have subjective prices for a good of 10 and 40, Aristotle pointed out that in exchange, it is most fair to price the good at 16, due to the equality proportional differences from their price to the new price. Another interesting nuance in this analysis of exchange is that Aristotle also saw a zone of consumer surplus or mutual advantage to both consumers that had to be divided (Lowry 2003:20.)

Roman law
Early Greek and Judaic law follow a voluntaristic principle of just exchange—a party was only held to an agreement after the point of sale. Roman law, written on Twelve Tables, developed the contract with the recognition that planning and commitments over time are necessary for efficient production and trade. According to Cicero in 450 C.E.:

Though all the world exclaim against me, I will say what I think: that single little book of the Twelve Tables, if anyone look to the fountains and sources of laws, seems to me, assuredly, to surpass the libraries of all the philosophers, both in weight of authority, and in plenitude of utility (Cicero, De Oratore, I.44. In: Thatcher 1901: 9-11.)
Following are some examples of those laws having direct impact on economy:

Table III
1.One who has confessed a debt, or against whom judgment has been pronounced, shall have 30 days to pay it in. After that forcible seizure of his person is allowed. The creditor shall bring him before the magistrate. Unless he pays the amount of the judgment or some one in the presence of the magistrate interferes in his behalf as protector the creditor so shall take him home and fasten him in stocks or fetters. He shall fasten him with not less than fifteen pounds of weight or, if he choose, with more. If the prisoner choose, he may furnish his own food. If he does not, the creditor must give him a pound of meal daily; if he choose he may give him more (Thatcher 1901: 9-11)
Table VI
1. When one makes a bond and a conveyance of property, as he has made formal declaration so let it be binding (Thatcher 1901: 9-11).
Table VII
9. Should a tree on a neighbor's farm be bend crooked by the wind and lean over your farm, you may take legal action for removal of that tree.
10. A man might gather up fruit that was falling down onto another man's farm (Thatcher 1901: 9-11).
Table IX
4. The penalty shall be capital for a judge or arbiter legally appointed who has been found guilty of receiving a bribe for giving a decision (Thatcher 1901: 9-11).
The large body of law was unified in the 530s C.E. by Justinian who was Emperor of the Eastern Roman Empire from 526-565 C.E. This "Code of Justinian" or Corpus Juris Civilis formed the base of most European civil law legal systems, still in force today. In the Institutiones, the principle of just trade is stated as tantum bona valent, quantum vendi possunt ("goods are worth as much as they can be sold for") (Institutiones 3:305).

Jewish thought
Five axioms of early Jewish economic theory can be expressed as follows (Sauer & Sauer 2007):

“Man is created in God's image.” In Judaism, this statement is interpreted as meaning that God is the creator of the world, and man is the creator in the world. (Babylonian Talmud Shabbat 10a)
Private property rights are essential and must be protected. Note that two of the Ten Commandments directly relate to the safeguarding of private property: “you shall not steal” and “you shall not covet anything that belongs to your neighbor.” The prohibition against stealing includes outright robbery, but also various forms of theft by deception and unethical business practices, such as the use of false weights in a transaction.
Accumulation of wealth is a virtue not a vice. Man is obligated to participate in the creative process, should not be demotivated by inadequate protection of private property, and is blessed when the outcome of honest labor is the accumulation of wealth. (Berachot 8a, Avot 4:1) also (Mishneh Torah Hafla'ah (Separation): Laws of vows and oaths 8:13).
There is the obligation to care for the needy through charitable giving. The Torah mentions the commandment to give charity in parashat Re'eh: “You should not harden your heart or shut your hand from your needy brother” (Deuteronomy 15:7—8).
It concerns the inefficiency of government and the dangers of concentrated power. The Torah repeatedly warns about the evil nature of government and bureaucracy:
These will be the rights of the king who is to reign over you. He will take your sons and assign them to his chariotry and cavalry, and they will run in front of his chariot. He will use them as leaders of a thousand and leaders of fifty; he will make them plough his ploughland and harvest his harvest and make his weapons of war and the gear for his chariots. He will also take your daughters as perfumers, cooks, and bakers. He will take the best of your fields, of your vineyards and olive groves and give them to his officials. He will tithe your crops and vineyards to provide for his eunuchs and his officials. He will take the best of your manservants and maidservants, of your cattle and your donkeys, and make them work for him. He will tithe your flocks, and you yourselves will become his slaves. When that day comes, you will cry out on account of the king you have chosen for yourselves, but on that day God will not answer you (1 Samuel 8:11—18).
These words could be compared to Friedrich Hayek's warning in The Road to Serfdom. Simply stated, when governments play an important role in allocating resources in society and/or map out a detailed plan for the workings of an economy, we risk the prospect of ever-increasing degrees of oppression in order to meet the plan's goals (Sauer & Sauer 2007).
As the early Jewish philosophy, politics, and economics had developed within the Babylonian and Greco-Roman worlds in the Near East—during the period that the early Islamic scholars were also very much present in the same area—the interpretation of ethical canons vis-a-vis their respective populations among the three religions was almost absolute. It is, therefore, of no surprise that the early thinkers of all three religions had almost exactly the same views on the micro- and sometimes even macro-economic matters. In fact, most of these early thinkers pre-dated with their theories much more famous European mercantilists and even classical economists that appeared 400 to 1400 year later.
There is, however, an interesting difference between Judaism and Christianity and ancient Islamic thoughts regarding riba (interest and usury). While Christianity unequivocally condemns this practice and the institution (Wilson 1997: 82-85), the same does not seem to be the case with Judaism, especially when the Jews are in a state of diaspora (Wilson 1997: 33-36). The Islamic position is the most explicit on the abolition of riba, which is seen as one of the most "visible" defining characteristics of an Islamic economic system (Wilson 1997: 124-125).

The Scholastics
Main article: Scholasticism
 Depiction of Saint Thomas Aquinas from The Demidoff Altarpiece by Carlo Crivelli
The "Scholastics" were the group of thirteenth and fourteenth century theologians, notably the Dominican Thomas Aquinas, that set down the dogma of the Catholic Church in light of the resurrection of Greek philosophy in the hands of twelfth century Islamic scholars. In the economic sphere, we can discern roughly four themes the Scholastics were particularly concerned with: property, justice in economic exchange, money, and usury.
The coexistence of private property with Christian teachings was never comfortable. In the fifth century, the early Church fathers (the Patricians, such as Augustine) had struck down "communistic" Christian movements and the Church itself went on to accumulate enormous amounts of property.
In the twelfth century, Saint Francis of Assisi began a movement (the Franciscans), which insisted on vows of poverty, "brotherhood" and deplored the accumulative tendencies of the Church. Against the Franciscans were arrayed Saint Thomas and the Dominicans, who extracted from Aristotle and the Bible the necessary arguments for their challenge. The Thomists took a practical stance: they argued that private property was a "conventional" human arrangement with no moral implications, and furthermore, it had the beneficial side-effect of stimulating economic activity and thus general welfare. The Thomists cautioned that this did not mean they endorsed all private enterprise: the "love of lucre," they noted, was a serious sin. They stressed the fact that man only has "stewardship" of God's property and should make property available for communal use. They also claimed that theft in times of need was justifiable (Lapidus 1994).
The growth of commerce forced the Scholastics to deal with the impact of market exchanges. They identified the "just price" as that which supported the continued reproduction of the social order. The Christian should "do unto others as you would have them do unto you," meaning he should trade value for value. Aquinas believed that it was specifically immoral to raise prices because a particular buyer had an urgent need for what was being sold and could be persuaded to pay a higher price because of local conditions.
Thomas Aquinas held that it was immoral to gain financially without actually creating something. This led to the distinction between legitimate interest and illegitimate usury. Interest taking became acceptable when lenders could demonstrate that by making the loan they suffered a loss (through missing an opportunity to use the money for another purpose) or had incurred risk that the loan might not be repaid (Eggleston 2008).
Another question that arose was that of entrepreneurship. Should a merchant be allowed to profit from differentials in prices? The Scholastics replied with a qualified yes, provided the merchant was not motivated by pure gain and profit be only just enough to cover his labor expenses (sacrifices) of the merchant. They went on to argue that the trader performs a valuable service and increases general welfare by meeting different needs.

India
The earliest known treatise on economic principles in India is the Arthashastra, authored by Chanakya.

Chanakya
Main articles: Chanakya and Arthashastra
Chanakya (c. 350 B.C.E.-283 B.C.E.) was a professor of political science at the Takshashila University of ancient India, and later the Prime Minister of the Mauryan emperor Chandragupta Maurya. He wrote the Arthashastra ("Science of Material Gain" or "Science of political economy" in Sanskrit). Many of the topics discussed in the Arthashastra are still prevalent in modern economics, including its discussions on the management of an efficient and solid economy, and the ethics of economics. Chanakya also focused on issues of welfare (for instance, redistribution of wealth during a famine) and the collective ethics that hold a society together. According to Chanakya, a conducive atmosphere is necessary for the state's economy to thrive. This requires that a state's law and order be maintained. Arthashastra specified fines and punishments to support strict enforcement of laws (the Dandaniti).
The Arthashastra argues for an autocracy managing an efficient and solid economy. The qualities describing the system, in effect, are that of a command economy. Chanakya says that artha (sound economy) is the most important quality and discipline required for a Rajarshi, and that dharma and kama are both dependent on it. He wrote on the economic duties of a king:

Hence the king shall be ever active in the management of the economy. The root of wealth is (economic) activity and lack of it (brings) material distress. In the absence of (fruitful economic) activity, both current prosperity and future growth will be destroyed. A king can achieve the desired objectives and abundance of riches by undertaking (productive) economic activity.
China
Qin Shi Huang
 The first emperor of China, Qin Shi Huang
Main article: Qin Shi Huang
Ideal and effective economic policy was long sought for in ancient China, and one of the greatest early reformers was the Emperor Qin Shi Huang (260 B.C.E.–210 B.C.E., ruled as First Emperor 221 B.C.E.-210 B.C.E.). He standardized coin currency throughout the old Warring States once he unified them under a strong central bureaucracy.
He claimed that both the agriculture and commerce were very important for the economy. He also standardized the coinage, introducing a circular copper coin with a square hole in the center. Equally important reforms were the standardization of weights and measures, and codification of the law. These reforms benefited both the economy and cultural exchange during the period.

Wang Anshi
Main article: Wang Anshi
However, one of the greatest economic reformers in China lived during the medieval Song Dynasty (960-1279 C.E.), that being Chancellor Wang Anshi (1021-1086). Espousing heated reaction by conservative ministers at court, Wang Anshi's political faction of the New Policies Group enacted a series of reforms that centered around military reform, bureaucratic reform, and economic reform.
Among the initiated major economic reforms in the interest of merchants and small farmers—whom he considered the backbone of the Chinese economy in terms of production of goods and greatest source of the land tax—were: reduced interest, commutation of labor services, and reduced prices and land taxes.

Medieval Islamic economic thought
The possible indebtedness of political economy to fourth-century Greek thinkers has been widely debated, the contribution of Islam, on the other hand, has been consistently forgotten. Islamic economic thought is as old as Islam itself, for the Qur'an and the Sunnah, the sayings and acts of Muhammad, contain economic teachings. However, their contents are considered divine, and thus it is only their interpretation that can be considered Islamic economic thought. The early Muslims generally based their economic analyses on the Qur'an (such as opposition to riba, meaning usury or interest), and from Sunnah. These efforts in Islamic economic thinking are thus ascribed to the writers who made these attempts, rather than to the Qur'an and the Sunnah.
Throughout its 14 centuries there are works in which economic issues are discussed in light of the Shari'ah. However, the vast literature on the exegesis of the Qur'an, commentaries on Hadith, principles of jurisprudence (usul al-fiqh), and law (fiqh) has greatly overshadowed the economic treatises. Nevertheless, a number of writings on economic thought are available.
Persian philosopher Nasir al-Din al-Tusi (1201-1274) presented an early definition of economics (what he called hekmat-e-madani, the science of city life) in his Ethics:

the study of universal laws governing the public interest (welfare?) in so far as they are directed, through cooperation, toward the optimal (perfection) (Hosseini 2003: 39).
The concept of tadbîr is of significance in this context. There is a slightly different meaning of the tadbîr from that of Hellenic oikonomia. Tadbîr also includes God-determined harmony and rationally organized administration. Thus, it reflects an idealized model of enlightened yet authoritarian administration, rather than the building of an exact notion related to the economy.
Muslim economic thought enriched the Hellenic contribution to economic thought in the areas of government of the kingdom by the caliph, of the city, and the household organization. In rejecting profit, usury, egoism, and monopoly, and in preaching moderation, altruism, the practice of fair prices, and unselfishness, Islam inaugurated an "economic system" which has derived from that of the Greeks and which laid the basis for pre-capitalist thought (Essid 1995).

Zaid bin 'Ali
Zaid bin 'Ali (10-80 AH/699-738 C.E.), the grandson of Imam Husain, was one of the most eminent jurists of Medina, whom other eminent jurists like Abu Hanifa held in high esteem. Zaid permitted the sale of a commodity on credit at a price higher than its cash price. Muhammad Abu Zahra discussed a rationale of its permission at some length, which is worth quoting in view of the contemporary relevance of the issue:

Those who disallow the deferred price to be higher than the cash price argue that the difference is riba as it is an increase (in payment against time), and every increase against deferment (or payment) is riba. There is no difference between saying "Either you pay now or pay more in lieu of deferment," and selling at a higher (than cash) price because of deferred payment. The essence is the same and it is riba (Hosseini 2003: 40).
One who sells on credit does so out of necessity, he cannot be regarded as doing so willingly. He is therefore not covered by the Qur'anic verse "except when it is trade among you with mutual consent [IV: 29]."

Abu Hanifa
Abu Hanifa (80-150 AH/699-767 C.E.), (Arabic: أبو حنيفة‎) was the founder of the Sunni Hanafi school of Islamic jurisprudence.
Abu Hanifa's concern for the poor and the weak was well known, as was the human values in his juristic method (Hosseini 2003:36) A transaction which was becoming increasingly popular was salam or sale of commodity to be delivered in future against a price paid in cash at the time of contract. Abu Hanifa found confusion surrounding this type of contract often led to disputes. He tried to eliminate these disputes by specifying what must be known and stated clearly in the contract, such as the commodity, its kind, quality and quantity, and the date and place of delivery. He laid down a further condition that the commodity be available in the market during the period intervening between the contract and the date of delivery so that both parties knew that its delivery was possible.

Abu Yusuf
An emphasis on the economic responsibilities of the rulers has been a recurrent theme of Islamic economic thought since the earliest days. This was the focal point of Abu Yusuf (113-182 AH/731-798 C.E.) (Arabic: أبو يوسف), chief jurist for Abbasid Caliph Harun al-Rashid, for whom he wrote the Book of Taxation (Kitab al-Kharaj).
This book outlined Abu Yusuf's ideas on taxation, public finance, and agricultural production. He discussed proportional tax on produce instead of fixed taxes on property as being superior as an incentive to bring more land into cultivation. He also advocated forgiving tax policies which favor the producer and a centralized tax administration to reduce corruption. Abu Yusuf favored the use of tax revenues for socioeconomic infrastructure, and included discussion of various types of taxes, including sales tax, death taxes, and import tariffs (Hosseini 2003: 34).
Abu Yusuf preferred the state taking a proportion of the agricultural produce from the cultivator rather than levy a fixed rent on agricultural land. This was more just and likely to yield a larger revenue by facilitating expansion of the area under cultivation. In discussing taxation, he laid down certain principles which anticipate those introduced many centuries later by the economists as "canons of taxation." He suggested salaried staff to act as tax collectors, who should be under strict supervision in order to prevent corrupt and oppressive practices.
The main strength of Abu Yusuf's thinking, however, lies in the area of public finance. Apart from the responsibilities of the Islamic state related to welfare of the people, he wrote detailed suggestions on how to meet long term development expenditures like those on building bridges and dams, and digging canals. They speak highly of his foresight, sagacity and concern for the well-being of the population (Hosseini 2003: 38).

Ibn Khaldun
Main articles: Ibn Khaldun and Muqaddimah
 Statue of Ibn Khaldoun in Tunis


When civilization [population] increases, the available labor again increases. In turn, luxury again increases in correspondence with the increasing profit, and the customs and needs of luxury increase. Crafts are created to obtain luxury products. The value realized from them increases, and, as a result, profits are again multiplied in the town. Production there is thriving even more than before. And so it goes with the second and third increase. All the additional labor serves luxury and wealth, in contrast to the original labor that served the necessity of life (Weiss 1995: 30).


Ibn Khaldun on economic growth

Perhaps the most well known Islamic scholar who wrote about economics was Ibn Khaldun (732-808 AH/1332-1404 C.E.) of Tunisia. Joseph Schumpeter (1954: 136) mentions his sociology, others, including Hosseini (2003) consider him a father of modern economics. It is his insight into the laws governing human behavior and socio-economic phenomena like division of labor, growth and decline of population, and rise and fall of prices, which distinguished him from many other social thinkers. The focus of his attention was the various stages of growth and decline through which, according to his insight, every society must pass. This theory has been compared with John Hicks' theory of trade cycles (Weiss 1995: 29-30).
Ibn Khaldun's idea about the benefits of the division of labor relate to asabiyya, the greater the social cohesion, the more complex the successful division may be, the greater the economic growth. He noted that growth and development positively stimulate both supply and demand, and that the forces of supply and demand are what determine the prices of goods (Weiss 1995: 31). He also noted macroeconomic forces of population growth, human capital development, and technological developments effects on development. In fact, Ibn Khaldun thought that population growth was directly a function of wealth (Weiss 1995:33).
A distinctive feature of Ibn Khaldun's approach to economic problems is his keenness to take into consideration the various geographical, ethnic, political, and sociological forces involved in the situation. He did not confine himself to the so-called economic factors alone. He would rather examine whatever forces he found relevant to the issue under study. It is in this context that one can appreciate his tendency to take a people's religious beliefs and traditions into account while discussing their economic behavior and social institutions. He was fully aware of the truth that production of wealth is not a result of individual labor and enterprise only. It owes itself as much to man's social and socio-political institutions, especially the state and its administration.

Conclusion
It is notable that in virtually all early cultures economic thinking converged onto several basic items: How to make agricultural production more efficient; and how to make markets, taxation policies, and other monetary instruments transparent and free from corruption, usury, and other practices that would otherwise destroy the well-being of ordinary law-abiding people on which strong and unified states were built.
It is worth remembering that the early economists and jurisprudence specialists, even though they strongly advocated the efficiency of productive sectors, were also much more sympathetic to the ordinary workers' plight than, say, the later mercantilists. During the mercantilist period, industrial and agricultural workers lived on the brink of poverty with very little protection in the law statutes of the time, but the ancient philosophers, jurists, and economists always had the interest of these working classes in mind.
These early thinkers were concerned that their teachings in jurisprudence or economics reached the highest administrative levels of the country: emperors, kings, caliphs, and so on, and that those rulers would take care of enforcing the “canons of law.”

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