If you put off everything till you're sure of it, you'll never get anything done.

Great work requires great and persistent effort for a long time. … Character has to be established through a thousand stumbles.

Your pain is the breaking of the shell that encloses your understanding.

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

So early in my life, I had learned that if you want something, you had better make some noise.

Whenever a negative thought concerning your personal power comes to mind, deliberately voice a positive thought to cancel it out.

Gratitude is an illness suffered by dogs.

Drink moderately, for drunkenness neither keeps a secret nor observes a promise.

Courage isn't having the strength to go on - it is going on when you don't have strength.

Only the wisest and stupidest of men never change.

Do not count your chickens before they are hatched.

Some people regard discipline as a chore. For me, it is a kind of order that sets me free to fly.

We're lost, but we're making good time

Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.

A man is but the product of his thoughts. What he thinks, he becomes.

Do not pray for easy lives. Pray to be stronger men.

We all have possibilities we don't know about. We can do things we don't even dream we can do.

The duty of youth is to challenge corruption.

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

People should pursue what they're passionate about. That will make them happier than pretty much anything else.

Our life is what our thoughts make it.