Technical Utopias-flying, for example-have been achieved by the new science of nature.The human utopia...a united new humankind living in solidarity and peace, free from economic determination and from war and class struggle-can be achieved, provided we spend the same energy, intelligence, and enthusiasm on the realization of the human Utopia as we have spent on the realization of our technical Utopias.

In the 19th century inhumanity meant cruelty; in the 20th century it means schizoid self-alienation.

There are many who feel consciously hopeful and unconsciously hopeless, and there are few for whom it is the other way around.

There can be no real freedom without the freedom to fail.

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

Love is an act of faith.

To be loved because of one's merit, because one deserves it, always leaves doubt; maybe I did not please the person whom I want to love me, maybe this, or that - there is always a fear that love could disappear.