Love is an act of faith, and whoever is of little faith is also of little love.

The right to express our thoughts means something only if we are able to have thoughts of our own

The affirmation of one's own life, happiness, growth and freedom, is rooted in one's capacity to love.

I think if you ask what people really mean by happiness today, it is the experience of unlimited consumption - the kind of thing Mr. Huxley described in "Brave New World."

We are confronted with the possibility of a war of such destruction that the whole existence of our nation and of the whole world is at stake. And yet, people know it - people read it in the newspapers, people read that at the first attack, a hundred million Americans might be killed. And yet, they talk about it as if they were talking about something being wrong with the carburetor of their car, perhaps.

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.

Man is the only animal who does not feel at home in nature, who can feel evicted from paradise, the only animal for whom his own existence is a problem that he has to solve and from which he cannot escape. He cannot go back to the prehuman state of harmony with nature, and he does not know where he will arrive if he goes forward. Man's existential contradiction results in a state of constant disequilibrium. This disequilibrium distinguishes him from the animal, which lives, as it were, in harmony with nature.