It doesn’t matter where you start, it matters how you end

Tough times never last, but tough people do.

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

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

There is no elevator to success, you have to take the stairs.

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

Failure is not the opposite of success, it is part of the success.

Mathematics Is not a spectator sport. The only way to learn mathematics is to do mathematics.

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

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

The journey of a thousand miles begins with one step. 

Fall down seven times, stand up eight.

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

Hope might be a good breakfast, but it makes a very poor dinner

If you fail, next time fail better.