Old ideas are continually being slain by new facts. There is nothing stable in the conclusions of the mind, and it is impossible that there ever should be unless we hold that the universe is made to the measure of the human mind, an assumption for which nothing in the past gives any warrant.

The Greeks were the first intellectualists. In a world where the irrational had played the chief role, they came forward as the protagonists of the mind.

I came to the Greeks early, and I found answers in them. Greece's great men let all their acts turn on the immortality of the soul. We don't really act as if we believed in the soul's immortality and that's why we are where we are today.

The suffering of a soul that can suffer greatly -- that and only that, is tragedy.

Uncertainty is the prerequisite to gaining knowledge and frequently the result as well.

Freedom was born in Greece because there men limited their own freedom. ... The limits to action established by law were a mere nothing compared to the limits established by a man's free choice.

When we speak of beauty, we're speaking of something we're more or less indifferent to.