Love is the active concern for the life and the growth of that which we love.

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.

I shall become a master in this art only after a great deal of practice.

In the sleeping state, instead, one is much more oneself, even if society never ceases to intervene.

Actually, if you take the average American, and studies have shown that, he is really concerned only with private affairs; that is to say, with his health, his money and family affairs.

To love one person productively means to be related to his human core, to him as representing mankind. Love for one individual, in so far as it is divorced from love for man, can refer only to the superficial and to the accidental; of necessity it remains shallow.

Who will tell whether one happy moment of love or the joy of breathing or walking on a bright morning and smelling the fresh air, is not worth all the suffering and effort which life implies.