Free man is by necessity insecure, thinking man by necessity uncertain.

Death is never sweet, not even if it is suffered for the highest ideal.

Boredom is nothing but the experience of a paralysis of our productive powers and the sense of unaliveness. Among the evils of life, there are few which are as painful as boredom, and consequently every attempt is made to avoid it.

Psychoanalysis is essentially a theory of unconscious strivings, of resistance, of falsification of reality according to one's subjective needs and expectations.

According to me [Sigmund ] Freud did not notice that the dream expresses the inner experiences in a symbolic form,resembling in that, poetry or other art forms.

Modern man is assailed on every side and almost without interruption by noise - of the radio, of television, of headlines, of advertising and of the cinema - of which the greatest part, far from enlightening the mind, blunts and stultifies it.

Man may be defined as the animal that can say ''I,'' that can be aware of himself as a separate entity.