Pure mathematics is in its way, the poetry of logical ideas.

Hard work beats talent when talent doesn't work hard.

I think, therefore I am.

The journey of a thousand miles begins with one step.

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

Procrastination makes easy things hard and hard things harder.

Don't be afraid to take an unfamiliar path.  Sometimes they're the ones that lead you to the best places.

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

I can is 100 times more important than IQ.

When you make a mistake, take another chance. Only when you choose not to do so do you fail.

The greatest enemy to human potential is your comfort zone

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

The boxer is not afraid of being knocked down, he is afraid of not being able to get up again.

There are no bad mistakes in maths, only discoveries.

Dreams don't work unless you do.