Only idiots refuse to change their minds.

Learn from the mistakes of others. You can never live long enough to make them all yourself.

The very essence of instinct is that it's followed independently of reason.

All imperfection is easier to tolerate if served up in small doses.

It is hard to fight desire; but to control it is the sign of a reasonable man.

As our case is new, we must think and act anew.

Do your little bit of good where you are; it's those little bits of good put together that overwhelm the world.

You can best serve civilization by being against what usually passes for it.

The road of excess leads to the palace of wisdom.

There is no question climate change is happening. The only arguable point is what part humans are playing in it.

He who is cruel to animals becomes hard also in his dealings with men. We can judge the heart of a man by his treatment of animals.

Men are not prisoners of fate, but only prisoners of their own minds.

Be frank and explicit. That is the right line to take when you wish to conceal your own mind and to confuse the minds of others.

Anger begins in folly, and ends in repentance.

Act as if the maxim of your action were to become through your will a general natural law

Nothing is softer or more flexible than water, yet nothing can resist it.

As the soft yield of water cleaves obstinate stone, So to yield with life solves the insolvable: To yield, I have learned, is to come back again.

Beer: The cause of, and solution to, all of life's problems.

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

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

Wonder is the beginning of wisdom.