When one is engaged in a desperate defense of one's world and its values, nothing can be given away, any breach in the walls might be fatal, every point must be defended to the death.

Injustice, poverty, slavery, ignorance - these may be cured by reform or revolution. But men do not live only by fighting evils. They live by positive goals, individual and collective, a vast variety of them, seldom predictable, at times incompatible.

Only barbarians are not curious about where they come from, how they came to be where they are, where they appear to be going, whether they wish to go there, and if so, why, and if not, why not.

Science cannot destroy the consciousness of freedom, without which there is no morality and no art, but it can refute it.

Life may be seen through many windows, none of them necessarily clear or opaque, less or more distorting than any of the others.

Philosophers are adults who persist in asking childish questions.

We are doomed to choose and every choice may entail irreparable loss.