We all have two lives. The second begins when we realise we only have one. 

We learn more from failure than we do from success.

If you can understand just one thing thoroughly, then you will understand everything.

Work ethic is important, because, unlike intelligence, athleticism, or charisma, or any natural attribute, it’s a choice.

Practice like you’ve never won. Perform like you’ve never lost.

Failure to prepare = preparing to fail

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

If you fail, next time fail better.

Shoot for the moon and even if you miss you’ll land among the stars/

The road to success is like a staircase. If you want to succeed, double your failure rate

You can hire a tutor but you can't hire someone to practice for you.

Skills are built not born.

There is no talent here. There is hard work and obsession. You could be anyone if you put in the time.

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

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