One who gains strength by overcoming obstacles possesses the only strength which can overcome adversity.

I don't know, I don't care, and it doesn't make any difference.

There are no eternal facts, as there are no absolute truths.

He that cannot reason is a fool. He that will not is a bigot. He that dare not is a slave.

Our virtues and our failings are inseparable, like force and matter. When they separate, man is no more

We are all born ignorant, but one must work hard to remain stupid

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

No one cares how much you know, until they know how much you care

Let no man pull you low enough to hate him.

It is man that makes truth great, not truth that makes man great.

If you don't want to slip up tomorrow, speak the truth today.

Our society is run by insane people for insane objectives.

Choose rather to be strong of soul than strong of body.

A wise man can learn more from a foolish question than a fool can learn from a wise answer.

If you do what you've always done, you'll get what you've always gotten.

I am a lover of truth, a worshipper of freedom, a celebrant at the altar of language and purity and tolerance.

When you undervalue what you do, the world will undervalue who you are

Good means not merely not to do wrong, but rather not to desire to do wrong.

Whenever you find yourself on the side of the majority, it is time to pause and reflect.

Better mad with the rest of the world than wise alone.

It is not enough to have a good mind; the main thing is to use it well.