The more that you read, the more things you will know. The more that you learn, the more places you'll go.

The noblest pleasure is the joy of understanding.

The most courageous act is still to think for yourself. Aloud.

Happiness is not an ideal of reason, but of imagination.

I have no desire to make windows into mens souls

If you would take, you must first give, this is the beginning of intelligence.

It takes a lot of courage to show your dreams to someone else.

I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.

There is nothing more uncommon than common sense.

To be wronged is nothing unless you continue to remember it.

There are four ways, and only four ways, in which we have contact with the world. We are evaluated and classified by these four contacts: what we do, how we look, what we say, and how we say it.

When you learn, teach, when you get, give.

What's real and what's true aren't necessarily the same.

An understanding of the natural world is a source of not only great curiosity, but great fulfilment.

Attitude, not Aptitude, determines Altitude.

So many people have this idea: I want to achieve something great or be somebody great. And they neglect the step that leads to greatness. They don't honor this step at this moment because they have this idea of some future moment where they are going to be great.

An intelligent hell would be better than a stupid paradise.

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.

I write with experiences in mind, but I don't write about them, I write out of them.

Good advice is always certain to be ignored, but that's no reason not to give it.

I dream. Sometimes I think that's the only right thing to do.