Man's main task in life is to give birth to himself, to become what he potentially is. The most important product of his effort is his own personality. One can judge objectively to what extent a person has succeeded in his task, to what degree he has realized his potentialities. If he has failed in his task, one can recognize this failure and judge it for what it is - a moral failure.

Love is hot a higher power which descends upon mn nor a duty which is imposed upon him; it is his own power by which he relates himself to the world and makes it truly his.

The most beautiful as well as the most ugly inclinations of man are not part of a fixed biologically given human nature, but result from the social process which creates man.

Love is active penetration of the other person, in which my desire to know is stilled by union. In the act of fusion I know you, I know myself, I know everybody - and I "know" nothing.

Modern man is alienated from himself, from his fellow men, and from nature. He has been transformed into a commodity, experiences his life forces as an investment which must bring him the maximum profit obtainable under existing market conditions.

If faith cannot be reconciled with rational thinking, it has to be eliminated as an anachronistic remnant of earlier stages of culture and replaced by science dealing with facts and theories which are intelligible and can be validated.

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.