Don’t be afraid to work hard and find out how good you can really be.

It always seems impossible until it's done.

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

The journey of a thousand miles begins with one step.

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

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

Our fixed mindset builds our cage, fear keeps us in it.

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.

Whenever you find yourself doubting how far you can go, just remember how far you have come.

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

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

Don’t practice until you get it right, practice until you can’t get it wrong.

Nobody said it’d be easy, they just promised it would be worth it.

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

Your limitation - its only your imagination.