The greatest mistake we make is living in constant fear that we will make one.

Tough times never last, but tough people do.

It is never too late to turn an unproductive day into a productive one.

I can is 100 times more important than IQ.

Time is your friend, impulse is your enemy.

The bad news is time flies, the good new is that you're the pilot.

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. 

I think, therefore I am.

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

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

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.

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

The journey of a thousand miles begins with one step. 

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

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