Though instincts or drives can be formulated in physiological and biological terms they cannot be pinned down in that way, for they are also psychic entities which manifest themselves in a world of fantasy peculiarly their own.
Though instincts or drives can be formulated in physiological and biological terms they cannot be pinned down in that way, for they are also psychic entities which manifest themselves in a world of fantasy peculiarly their own.
biological / fantasy / instincts / physiological / psychic