Nothing is impossible if you want it badly enough. Impossible = I'm possible.

Failure to prepare = preparing to fail

Fall down seven times, stand up eight.

Time is your friend, impulse is your enemy.

I think, therefore I am.

Run in the morning before your body figures out what you're doing

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

I can is 100 times more important than IQ.

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.

1.00³⁶⁵=1 and 1.01³⁶⁵=37.7. Doing nothing at all versus small steps at a time. 

We learn more from failure than we do from success.

The greatest glory in loving lies not in never falling, but in rising every time we fall.

Knowledge is of no value unless you put it into practice.

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

Dreams don't work unless you do.