No, our science is no illusion. But an illusion it would be to suppose that what science cannot give us we can get elsewhere.

This transmissibility of taboo is a reflection of the tendency, on which we have already remarked, for the unconscious instinct in the neurosis to shift constantly along associative paths on to new objects.

I no longer count as one of my merits that I always tell the truth as much as possible; it has become my metier.

It is impossible to escape the impression that people commonly use false standards of measurement -- that they seek power, success and wealth for themselves and admire them in others, and that they underestimate what is of true value in life.

A transference neurosis corresponds to a conflict between ego and id, a narcissistic neurosis corresponds to that between between ego and super-ego, and a psychosis to that between ego and outer world.

The pleasure principle long persists, however, as the method of working employed by the sexual instincts, which are so hard to 'educate', and, starting from those instincts, or in the ego itself, it often succeeds in overcoming the reality principle, to the detriment of the organism as a whole.

Dreams are the guardians of sleep and not its disturbers.