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

It is the mark of an educated mind to be able to entertain a thought without accepting it.

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

Kind words don't cost much. Yet they accomplish much.

Intelligence is a moral category.

The best revenge is to be unlike him who performed the injury.

Stubborn and ardent clinging to one's opinion is the best proof of stupidity.

Moderation in temper is always a virtue; but moderation in principle is always a vice.

Those who cannot work with their hearts achieve but a hollow, half-hearted success that breeds bitterness all around.

Science has not yet taught us if madness is or is not the sublimity of the intelligence.

In any moment of decision, the best thing you can do is the right thing. The worst thing you can do is nothing.

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

I think, therefore I am.

How often I found where I should be going only by setting out for somewhere else.

The weak can never forgive. Forgiveness is the attribute of the strong.

The lie is a condition of life.

In the practice of tolerance, one's enemy is the best teacher.

It is not titles that honor men, but men that honor titles.

Learned we may be with another man's learning: we can only be wise with wisdom of our own.

All the great things are simple, and many can be expressed in a single word: freedom; justice; honor; duty; mercy; hope.

All differences in this world are of degree, and not of kind, because oneness is the secret of everything.