The quest for certainty blocks the search for meaning. Uncertainty is the very condition to impel man to unfold his powers.

I would define myself as a Marxian, and that means of course also as a humanist.

Human history began as an act of disobedience, and it is not unlikely that it will be terminated by an act of obedience. At this point in history the capacity to doubt, to criticize and to disobey may be all that stands between a future for mankind and the end of civilization.

For [Karl] Marx it is socialist society which realizes "concretely" the religious principles of equality, brotherly love, and freedom.

In the dream, sheltered from the noise, the subject expressed a judgment much more on the mark than that manifested in wakefulness.

If the Russians claim they are Socialist, this is just, I would say, a lie. They have no socialism at all. They have what I would call a state capitalism.

[Sigmund ] Freud assumes that every dream represents the satisfaction of adesire and in the last analysis, of a sexual desire that has its roots in infancy.