If one is not productive in other spheres, one is not productive in the love either.

Critical and radical thought will only bear fruit when it is blended with the most precious quality man is endowed with - the love of life

When blended with sexuality, the death instinct is transformed into more harmless impulses expressed in sadism or masochism.

That is not quite enough to make one happy, if one spends eight hours a day in something which in itself has no meaning and interest, except that one gains money from it.

The whole life of the individual is nothing but the process of giving birth to himself; indeed, we should be fully born when we die.

The two most far-reaching critical theories at the beginning of the latest phase of industrial society were those of Marx and Freud. Marx showed the moving powers and the conflicts in the social-historical process. Freud aimed at the critical uncovering of the inner conflicts. Both worked for the liberation of man, even though Marx's concept was more comprehensive and less time-bound than Freud's.

Paradoxically, the ability to be alone is the condition for the ability to love.