Success is a journey, not a destination.

I think, therefore I am.

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

You can hire a tutor but you can't hire someone to practice for you.

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

Work on your weaknesses until they are your strengths and work on your strengths until they are second nature.

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

Work like you don't need the money, dance like nobody's watching and love like you've never been hurt. 

Skills are built not born.

Dreams don't work unless you do.

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

No one starts out on top. You have to work your way up.

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

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

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