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

A hero is no braver than an ordinary man, but he is braver five minutes longer.

Do Not Be Afraid To Make Mistakes. Each mistake teaches us something.

Yesterday is history, tomorrow is a mystery, but today is a gift—that's why it's called 'the present

Whenever you find yourself doubting how far you can go, just remember how far you have come.

Failure is NOT your destiny. Failure is the key to success.

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

Hard work always pays off - it is not a question of if you will get there, but WHEN you will get there

There is no talent here. There is hard work and obsession. You could be anyone if you put in the time.

Never underestimate the importance of small steps. small steps = big changes. 

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

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

I think, therefore I am.

Tomorrow is worth more than yesterday but less than today.

Instead of finding reasons why you can't, find reasons why you can.