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

It always seems impossible until it's done.

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

A book a day keeps the stupidity away.

Work on your weaknesses until they are your strengths and work on your strengths until they are second nature.

Don't be afraid to take an unfamiliar path.  Sometimes they're the ones that lead you to the best places.

You can pick up a mistake and carry it as a burden,  or you can set it down as use it as a stepping stone to greatness.

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

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

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

Start, struggle, fail, fix and learn. Repeat.

In order to become better than anybody else you must first become better than yourself.

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

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

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