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

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

Don't fear failure, fear being in the same exact same place next year as you are now.

You can have results or excuses, not both

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

Your limitation - its only your imagination.

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

If you want to succeed, double your failure rate.

The journey of a thousand miles begins with one step.

I think, therefore I am.

There are no bad mistakes in maths, only discoveries.

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

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

Procrastination makes easy things hard and hard things harder.

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