I'm not telling you it's going to be easy - I'm telling you it's going to be worth it.

The man with no imagination has no wings.

A lot of legends, a lot of people, have come before me. But this is my time.

A thing worth having is a thing worth cheating for.

Lend yourself to others, but give yourself to yourself.

Learn from yesterday, live for today, hope for tomorrow.

If you don't know, the thing to do is not to get scared, but to learn.

It's always too early to quit.

Without ambition one starts nothing. Without work one finishes nothing. The prize will not be sent to you. You have to win it.

Do not count your chickens before they are hatched.

It's the little details that are vital. Little things make big things happen.

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

A Penny Saved is a Penny Earned

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

When you believe in a thing, believe in it all the way, implicitly and unquestionably.

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

I don’t think we are going to become extinct. We are very clever and very resourceful.

Sovereignty is not given, it is taken.

People don't realize how a man's whole life can be changed by one book.

I may not have gone where I intended to go, but I think I have ended up where I needed to be.

I am not what happened to me, I am what I choose to become.