If you place your head in a lion's mouth, then you cannot complain one day if he happens to bite it off.

One never notices what has been done; one can only see what remains to be done.

Do not deny the classical approach, simply as a reaction, or you will have created another pattern and trapped yourself there.

Those who dance are considered insane by those who cannot hear the music.

Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.

The only real laughter comes from despair.

Instinct is a marvellous thing. It can neither be explained nor ignored.

If you are neutral in situations of injustice, you have chosen the side of the oppressor.

To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact

But the fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright brothers. But they also laughed at Bozo the Clown.

One of the truest tests of integrity is its blunt refusal to be compromised.

If we know exactly where we're going, exactly how to get there, and exactly what we'll see along the way, we won't learn anything.

Everything excellent is as difficult as it is rare.

Nobody made a greater mistake than he who did nothing because he could do only a little.

Compassion is the basis of morality.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.

Yesterday I was clever, so I wanted to change the world. Today I am wise, so I am changing myself.

We may encounter many defeats but we must not be defeated.

Intelligence is a moral category.

The ultimate authority must always rest with the individual's own reason and critical analysis.

We choose our joys and sorrows long before we experience them.