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

The wise person knows that no answer is also an answer

Don't expect to be good at maths or understand things straight away. Be patient and persistent. Rome wasn't built in a day, but they worked on it every single day. 

There are no shortcuts to any place worth going.

A book a day keeps the stupidity away.

It always seems impossible until it's done.

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

If you fail, next time fail better.

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

Try and do one thing each day that you would really rather not do.

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

Knowledge is of no value unless you put it into practice.

Tomorrow is worth more than yesterday but less than today.

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

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.