"Hence the Freudian critique of Jung's monistic theory of the libido centers on the argument that it undermines the theory of repression. Secondly, the Freudian 'instinct' is a boderland concept between the mental and the biological, because Freud is seeking an explanation of man as neurotic or repressed in terms which would relate man's specifically human characteristic (repression) to his animal (bodily) nature. Hence he defines an instinct as 'both the mental representative of the stimuli emanating from within the organism and penetrating to the mind, and at the same time a measure of the demand made upon the energy of the latter in consequence of its connection with the body.' "
Norman O Brown Life against Death - The Psychoanalytical Meaning of History (1959) p.79
