Everything you want is on the other side of fear

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

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

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

Skills are built not born.

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

The journey of a thousand miles begins with one step.

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

There is no elevator to success, you have to take the stairs.

You'll never change your life until you change something you do daily. The secret to success and change in found in your daily routine.

Fall down seven times, stand up eight.

You cannot escape the responsibility of tomorrow by evading it today

I think, therefore I am.

It is never too late to turn an unproductive day into a productive one.

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