Work like you don't need the money, dance like nobody's watching and love like you've never been hurt. 

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

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

Don’t compare yourself to others. Compare yourself to the person you were yesterday.

Don’t practice until you get it right, practice until you can’t get it wrong.

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

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

I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.

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

99% of failures come from people who have the habit of making excuses.

When you make a mistake, take another chance. Only when you choose not to do so do you fail.

It always seems impossible until it's done.

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

The greatest glory in loving lies not in never falling, but in rising every time we fall.

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