Nature delights in making use of the same forms in the most various biological connections: as it does, for instance, in the appearance of branch-like structures both in coral and in plants, and indeed in some forms of crystal and in certain chemical precipitates.
Sigmund FreudThe transformation of object-libido into narcissistic libido which thus takes place obviously implies an abandonment of sexual aims, a desexualization - a kind of sublimation, therefore.
Sigmund FreudIn the theory of psycho-analysis we have no hesitation in assuming that the course taken by mental events is automatically regulated by the pleasure principle. We believe, that is to say, that the course of those events is invariably set in motion by an unpleasurable tension, and that it takes a direction such that its final outcome coincides with a lowering of that tension that is, with an avoidance of unpleasure or a production of pleasure.
Sigmund Freud