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

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

Nothing is impossible if you want it badly enough. Impossible = I'm possible.

MATHS = Mistakes Allow Thinking To Happen

Hope might be a good breakfast, but it makes a very poor dinner

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

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

The master has failed more times than the beginner has even tried

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

Success is a journey, not a destination.

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

There are no bad mistakes in maths, only discoveries.

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

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

A hero is no braver than an ordinary man, but he is braver five minutes longer.