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

99% of genius comes from hard work, the remaining 1% comes from innate talent

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

It always seems impossible until it's done.

You can pick up a mistake and carry it as a burden,  or you can set it down as use it as a stepping stone to greatness.

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

Tough times never last, but tough people do.

If you want to succeed, double your failure rate.

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

You can have results or excuses, not both

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

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

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

Patience is when you’re supposed to get mad, but you choose to understand

Don't expect to be good at maths or understand things straight away. Be patient and persistent. The most powerful warriors are patience and time.