The reproaches against science for not having yet solved the problems of the universe are exaggerated in an unjust and malicious manner; it has truly not had time enough yet for these great achievements. Science is very young--a human activity which developed late.

The functional importance of the ego is manifested in the fact that normally control over the approaches to motility devolves upon it. Thus in its relation to the id it is like a man on horse back, who has to hold in check the superior strength of the horse; with this difference, that the rider tries to do so with his own strength while the ego uses borrowed forces.

The voice of the intellect is a soft one, but it does not rest until it has gained a hearing.

One becomes gradually accustomed to a new realization of the nature of 'happiness': one has to assume happiness when Fate does not carry out all its threats simultaneously.

The act of birth is the first experience of anxiety, and thus the source and prototype of the affect of anxiety.

The voice of the intellect is soft one, but it does not rest until it has gained a hearing. Ultimately, after endless rebuffs, it succeeds. This is one of the few points in which one may be optimistic about the future of mankind.

The goal of all life is death