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

If you fail, next time fail better.

Just stick with it, what seems hard now will one day be your warm up.

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. 

We learn more from failure than we do from success.

The road to success is like a staircase. If you want to succeed, double your failure rate

Everything you want is on the other side of fear

There are no bad mistakes in maths, only discoveries.

I think, therefore I am.

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

The greatest glory in loving lies not in never falling, but in rising every time we fall.

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.

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

Time is your friend, impulse is your enemy.

I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.