There is no word in our language which has been so much misused and prostituted as the word love. It has been preached by those who were ready to condone every cruelty if it served their purpose; it has been used as a disguise under which to force people into sacrificing their own happiness, into submitting their whole self to those who profited from this surrender. [...] It has been made so empty that for many people love may mean no more than that two people have lived together for twenty years just without fighting more often than once a week.

The history of man is a graveyard of great cultures that came to catastrophic ends because of their incapacity for planned, rational, voluntary reaction to challenge.

Free man is by necessity insecure, thinking man by necessity uncertain.

Love is not primarily a relationship to a specific person; it is an attitude, an ordination of character which determines the relatedness of the person to the whole world as a whole, not toward one object of love

Modern man is assailed on every side and almost without interruption by noise - of the radio, of television, of headlines, of advertising and of the cinema - of which the greatest part, far from enlightening the mind, blunts and stultifies it.

I believe that man is the product of natural evolution that is born from the conflict of being a prisoner and separated from nature, and from the need to find unity and harmony with it.

I think we got off the track, as many societies do, who follow successfully one aim, and yet are not capable of seeing at what point the pursuit of this aim prevents them from following a more total aim. That is to say, they get into a blind alley.