Mathematics Is not a spectator sport. The only way to learn mathematics is to do mathematics.

It doesn’t matter where you start, it matters how you end

If you really want something you’ll find a way. If you don’t you’ll find an excuse.

I have not failed, I've just found 10,000 ways that won't work.

The journey of a thousand miles begins with one step. 

Don't fear failure, fear being in the same exact same place next year as you are now.

The temptation to quit will be the greatest when you are about to succeed

In order to become better than anybody else you must first become better than yourself.

The greatest mistake we make is living in constant fear that we will make one.

Everything that happens was once a dream.

No matter how bad it gets, you’re still way ahead of those who haven’t even started.

I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.

We learn more from failure than we do from success.

Don't be afraid to take an unfamiliar path.  Sometimes they're the ones that lead you to the best places.

When you make a mistake, take another chance. Only when you choose not to do so do you fail.