This is the question posed by the philosophy of India, and particularly by Buddhism and Zen. Indirectly, it is the fundamental question, in practice, of all religions and all philosophies.
Jung situates the Indian philosophical tradition — within which Dhyana is a central practice — as posing the fundamental psychological question of the unknown that immediately affects consciousness, implicitly linking contemplative absorption to depth-psychological inquiry.
, The Structure and Dynamics of the Psyche, 1960supporting