We all have two lives. The second begins when we realise we only have one. 

If you fail, next time fail better.

Mistakes have the power to turn you into something better than you were before.

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

You can have results or excuses, not both

If you want to succeed, double your failure rate.

Your attitude is everything. Pick a good one.

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

Pure mathematics is in its way, the poetry of logical ideas.

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

It always seems impossible until it's done.

Mathematics Is not a spectator sport. The only way to learn mathematics is to do mathematics.

Instead of finding reasons why you can't, find reasons why you can.

Never underestimate the importance of small steps. small steps = big changes. 

Nobody said it’d be easy, they just promised it would be worth it.