Only in being productively active can man make sense of his life.

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.

What is for me socialism is exactly the opposite of a bureaucratically-managed culture.

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.

In fact, there are very important writings of Marx which are not even translated into English.

Love of others and love of ourselves are not alternatives. On the contrary, an attitude of love towards themselves will be found in all those who are capable of loving others.

Man is the only animal for whom his own existence is a problem which he has to solve.