I don't care what people think or say about me, I know who I am.

Know thyself.

Change will not come if we wait for some other person, or if we wait for some other time. We are the ones we've been waiting for. We are the change that we seek.

Self-confidence is the first requisite to great undertakings.

You can't learn in school what the world is going to do next year.

No great discovery was ever made without a bold guess.

When written in Chinese, the word 'crisis' is composed of two characters. One represents danger, the other opportunity.

Improvement makes strait roads, but the crooked roads without Improvement, are roads of Genius.

Knowing what's right doesn't mean much unless you do what's right.

We do not consider our principles as dogmas contained in books said to come from heaven. We derive our inspiration, not from heaven, or the unseen world, but directly from life.

Don't ever take a fence down until you know why it was put up.

Everything you can imagine is real.

We are what we repeatedly do. Excellence, then, is not an act, but a habit.

Don't fear failure. Not failure, but low aim, is the crime. In great attempts it is glorious even to fail.

If you paint in your mind a picture of bright and happy expectations, you put yourself into a condition conducive to your goal.

All wealth is the product of labor.

If you are humble nothing will touch you, neither praise nor disgrace, because you know what you are.

You have to work hard to get to the top of your game. I think every writer has doubts! I still do all the time.

To See a World in a Grain of Sand And a Heaven in a Wild Flower, Hold Infinity in the palm of your hand And Eternity in an hour.

The fact that the great scientist believed in flying machines was the one thing that encouraged us to begin our studies.

People who are unable to motivate themselves must be content with mediocrity, no matter how impressive their other talents.