There are no bad mistakes in maths, only discoveries.

Do what you have always done and you will always be what you have always been

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

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

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

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

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

I have not failed, I've just found 10,000 ways that won't work.

Everything you want is on the other side of fear

If you want to succeed, double your failure rate.

Your limitation - its only your imagination.

The wise person knows that no answer is also an answer

Twenty years from now you will be more disappointed by the things you didn’t do than the things you did do

We learn more from failure than we do from success.

It always seems impossible until it's done.