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

Failure to prepare = preparing to fail

I think, therefore I am.

We learn more from failure than we do from success.

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

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

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

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

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

I can is 100 times more important than IQ.

There is great wisdom in being able to realise that you don’t understand something before it goes too far.

The easiest person to deceive is yourself.

You can have results or excuses, not both

We are all maths people : step 1 - do maths and step 2 - be a person. 

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