This is one small step for a man, one giant leap for mankind.

Question with boldness even the existence of God; because, if there be one, he must more approve of the homage of reason than that of blindfolded fear.

To give pleasure to a single heart by a single act is better than a thousand heads bowing in prayer.

The time is always right to do the right thing

First they ignore you, then they ridicule you, then they fight you, and then you win.

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

Yelling at living things does tend to kill the spirit in them. Sticks and stones may break our bones, but words will break our hearts...

Perseverance is failing 19 times and succeeding the 20th.

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

Don't just read the easy stuff. You may be entertained by it, but you will never grow from it.

They alone live, who live for others.

The man with no imagination has no wings.

Cultivate your curves - they may be dangerous but they won't be avoided.

If you spend too much time thinking about a thing, you'll never get it done.

For me, I'm focused on what I want to do. I know what I need to do to be a champion, so I'm working on it.

It's what you learn after you know it all that counts.

Courage is the most important of all the virtues, because without courage you can't practice any other virtue consistently. You can practice any virtue erratically, but nothing consistently without courage.

If you can't fly then run, if you can't run then walk, if you can't walk then crawl, but whatever you do you have to keep moving forward.

You have power over your mind - not outside events. Realize this, and you will find strength.

The secret of genius is to carry the spirit of the child into old age, which means never losing your enthusiasm.

Find out who you are and do it on purpose.