Sen was born in the Jhelum District of Punjab (now part of Pakistan) in a Punjabi Hindu family from Punjab, but grew up in Delhi when his family moved there. From a young age he was interested in the spiritual quest. He completed a master's degree in both Philosophy and Psychology at the University of Delhi.
To further his studies, he enrolled at the University of Freiburg, in Germany, and obtained a PhD in Philosophy. He also attended the lectures of Martin Heidegger and taught Indian Philosophy and Sanskrit at the University of Koenigsberg. At this time, his main interests were Hegel's philosophy, and Jung's psychology. He later returned to the University of Delhi. In December 1933 he met Jung when the latter visited Calcutta for the Indian Science Congress.[1] Sen went on to become President of the psychology section of the Indian Science Congress, and was also a recipient of the Eastern-Western psychology lecture award of the Swami Pranavananda Psychology Trust[2]
In 1945, Sen left his university post and joined his family at the Sri Aurobindo Ashram. In following years, through lectures, published writings, and personal contacts, he presented Sri Aurobindo's work to academia and universities, where it became well known for the first time.
In a series of professional papers published from the mid-1930s through the 1940s and 1950s, he coined the term Integral psychology, to describe the psychological observations contained in Sri Aurobindo's Yoga psychology and philosophy.[3] He also was concerned with the formulation of integral education as presented in the teachings of Sri Aurobindo and The Mother.[4]
His papers, which were sent to Sri Aurobindo and later The Mother before publication, were presented at scientific congresses or published in Ashram journals.[5] It was not until 1986 that these papers were published, by the Sri Aurobindo International Centre of Education in book form, as Integral Psychology: The Psychological System of Sri Aurobindo. This has since been issued in a second edition. The field of Integral psychology was later taken up and developed by Haridas Chaudhuri when he founded the Integral Counseling Psychology program at what is now the California Institute of Integral Studies, in the 1970s.
Another of Sen's tasks was to develop three centres for the ashram under The Mother's supervision. One was at Jwalapur, near Haridwar, and the other two in the Kumaon Hills – "Mountain Paradise", an orchard, and "Tapogiri", a place for sadhana (spiritual practice). The last mentioned especially, he was very committed to.
In all of Sen's work, themes of integral and wholeness were very important, and he frequently used terms like "Integral Culture" and "Integral Man".[6] He observed that in Indian psychology "the theoretical and the practical motives of life are combined"[7] and was critical of psychoanalysis for not being interested in the problem of emotional life as a whole.[8]
– -- The Integral Culture of Man. World Union April–June 1970; Unesco Declaration 1970
– -- Sri Aurobindo and The Mother; Meditation and Allied Methods – Compilation
– -- Integral Psychology The Psychological System of Sri Aurobindo (In Original Words and in Elaborations), Sri Aurobindo Ashram Publications Department, Pondicherry, 1st edition 1986; 2nd edition 1999 ISBN81-7058-540-6
^Don Salmon and Jan Maslow, Yoga Psychology and the Transformation of Consciousness Paragon House, 2007, ISBN1-55778-835-9 p. 357
^Brant Cortright, Integral Psychology: Yoga, Growth, and Opening the Heart, SUNY, 2007 ISBN0-7914-7071-7, p.5; Salmon and Maslow, Yoga Psychology and the Transformation of Consciousness p. 357
^Sen, 1960, "The Indian Approach to Psychology" in Chaudhuri and Spiegelberg eds, The Integral Philosophy of Sri Aurobindo, London: George Allen and Unwin, 1960, p. 186, cited in Haridas Chaudhuri "Yoga Psychology", in Charles T. Tart (ed.) Transpersonal Psychologies, Harper Colophon, 1975, p. 236
^Melvin Herman Marx and William Allen Hillix, Systems and theories in psychology, McGraw-Hill, 1963, page 461