Every aquarium will eventually leak.

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

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

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

Thoughts without content are empty, intuitions without concepts are blind.

It is a cliche that most cliches are true, but then like most cliches, that cliche is untrue.

Mistakes are always forgivable, if one has the courage to admit them.

A house is not a home unless it contains food and fire for the mind as well as the body.

Your visions will become clear only when you can look into your own heart. Who looks outside, dreams; who looks inside, awakes.

Generosity is giving more than you can, and pride is taking less than you need.

The lie is a condition of life.

Beauty is not in the face; beauty is a light in the heart.

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

Jealousy is the tribute mediocrity pays to genius.

If you don't know where you're from, you'll have a hard time saying where you're going.

If you don't behave as you believe, you will end by believing as you behave.

What's done can't be undone.

Not everything that can be counted counts, and not everything that counts can be counted.

Resist much. Obey little.

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

The greatest of all mistakes is to do nothing because you think you can only do a little