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

Yesterday is history, tomorrow is a mystery, but today is a gift—that's why it's called 'the present

Patience is when you’re supposed to get mad, but you choose to understand

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

Failure is not the opposite of success, it is part of the success.

There is no elevator to success, you have to take the stairs.

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

We are all maths people : step 1 - do maths and step 2 - be a person. 

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

Don't expect to be good at maths or understand things straight away. Be patient and persistent. The most powerful warriors are patience and time.

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

Hard work always pays off - it is not a question of if you will get there, but WHEN you will get there

You can have results or excuses, not both

Skills are built not born.

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