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

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

Hard work - a two way street where you get exactly what you put in.

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

Failure to prepare = preparing to fail

Just stick with it, what seems hard now will one day be your warm up.

I have not failed, I've just found 10,000 ways that won't work.

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

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

You cannot escape the responsibility of tomorrow by evading it today

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

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.

Skills are built not born.

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