Man can never stand still. He must find solutions to this contradiction, and ever better solutions to the extent to which reality enables him.

Ideas become powerful only if they appear in the flesh; an idea which does not lead to action by the individual and by groups remains at best a paragraph or a footnote in a book.

While every human being has a capacity for love, its realization is one of the most difficult achievements.

I want to mention that Marx shares something, if you don't mind the comparison, with the Old Testament: many people talk about him, but nobody has read him.

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.

Boredom is nothing but the experience of a paralysis of our productive powers.

If it is true, as I have tried to show, that love is the only sane and satisfactory answer to the problem of human existence, then any society which excludes, relatively, the development of love, must in the long run perish of its own contradiction with the basic necessities of human nature.