It is never too late to become what you might have been

The master has failed more times than the beginner has even tried

The easiest person to deceive is yourself.

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

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

Patience is when you’re supposed to get mad, but you choose to understand

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.

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

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

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

Hard work beats talent when talent doesn't work hard.

Just stick with it, what seems hard now will one day be your warm up.

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

Mistakes have the power to turn you into something better than you were before.