The average American is not concerned with his society. He talks about it, but you know if one speaks of being concerned, I mean something about which one loses one's sleep, sometimes.

The task we must set for ourselves is not to feel secure, but to be able to tolerate insecurity.

You have to stop in order to change direction.

We are terribly imaginative, as far as technique in science is concerned. As far as changes in social arrangements are concerned, we lack utterly in imagination.

Beyond the element of giving, the active characteristic of love becomes evident in the fact that it always implies certain basic elements, common to all forms of love. These are care, responsability, respect and knowledge

The aim of life is to be fully born, though its tragedy is that most of us die before we are thus born.

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