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

The easiest person to deceive is yourself.

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

It always seems impossible until it's done.

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

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

No one starts out on top. You have to work your way up.

Don’t hang your targets after you’re done shooting.

The journey of a thousand miles begins with one step.

The power of reflection is the most powerful skill you’ll learn.

Fall down seven times, stand up eight.

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

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

Work like you don't need the money, dance like nobody's watching and love like you've never been hurt. 

The boxer is not afraid of being knocked down, he is afraid of not being able to get up again.