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

Fall down seven times, stand up eight.

Hard work - a two way street where you get exactly what you put in.

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

Don't fear failure, fear being in the same exact same place next year as you are now.

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

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

Tough times never last, but tough people do.

Success is not final and failure is not fatal. It is the courage to continue that counts.

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

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

Try and do one thing each day that you would really rather not do.

There are no shortcuts to any place worth going.

Go as far as you can see, when you get there, you’ll be able to see further

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