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

I think, therefore I am.

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

There are no bad mistakes in maths, only discoveries.

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

Work like you don't need the money, dance like nobody's watching and love like you've never been hurt. 

Work ethic is important, because, unlike intelligence, athleticism, or charisma, or any natural attribute, it’s a choice.

Practice like you’ve never won. Perform like you’ve never lost.

The power of reflection is the most powerful skill you’ll learn.

I can is 100 times more important than IQ.

Don’t confuse your path with your destination. Just because its stormy now doesn’t mean you are headed for failure.

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

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

Hard work - a two way street where you get exactly what you put in.

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.