I think, therefore I am.

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

If you fail, next time fail better.

Don't expect to be good at maths or understand things straight away. Be patient and persistent. Rome wasn't built in a day, but they worked on it every single day. 

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

No matter how bad it gets, you’re still way ahead of those who haven’t even started.

A book a day keeps the stupidity away.

1.00³⁶⁵=1 and 1.01³⁶⁵=37.7. Doing nothing at all versus small steps at a time. 

Run in the morning before your body figures out what you're doing

In order to become better than anybody else you must first become better than yourself.

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

We learn more from failure than we do from success.

Whenever you find yourself doubting how far you can go, just remember how far you have come.

Procrastination is the thief of time and the enemy of success.

The easiest person to deceive is yourself.