We shall not cease from exploration, and the end of all our exploring will be to arrive where we started and know the place for the first time.

Only those who will risk going too far can possibly find out how far one can go.

For last year's words belong to last year's language And next year's words await another voice.

To do the useful thing, to say the courageous thing, to contemplate the beautiful thing: that is enough for one man's life.

Knowledge is invariably a matter of degree: you cannot put your finger upon even the simplest datum and say this we know.

If you haven’t the strength to impose your own terms upon life, then you must accept the terms it offers you.

I will show you fear in a handful of dust.

Sometimes things become possible if we want them bad enough.

Half of the harm that is done in this world is due to people who want to feel important. They don't mean to do harm. But the harm does not interest them.