Early to bed and early to rise, Makes a man healthy, wealthy, and wise.

None but ourselves can free our minds.

The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.

It was a melancholy secret that reality can arouse desires but never satisfy them.

The use of travelling is to regulate imagination by reality, and instead of thinking how things may be, to see them as they are.

Whatever you think the world is withholding from you, you are withholding from the world.

Fear doesn't exist anywhere except in the mind.

Think no vice so small that you may commit it, and no virtue so small that you may over look it.

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

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

Every aquarium will eventually leak.

The simple things are also the most extraordinary things, and only the wise can see them.

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

There's no sense in being precise when you don't even know what you're talking about.

Men build too many walls and not enough bridges.

Bitterness is like cancer. It eats upon the host. But anger is like fire. It burns it all clean.

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

Each day is a little life; every waking and rising a little birth; every fresh morning a little youth; every going to rest and sleep a little death.

If a man could have half of his wishes, he would double his troubles.

Man is not the creature of circumstances, Circumstances are the creatures of men.

Colorless green ideas sleep furiously