The bad news is time flies, the good new is that you're the pilot.

I think, therefore I am.

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

The journey of a thousand miles begins with one step. 

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

I can is 100 times more important than IQ.

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

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

The road to success is like a staircase. If you want to succeed, double your failure rate

Don't fear failure, fear being in the same exact same place next year as you are now.

Don’t hang your targets after you’re done shooting.

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

Tomorrow is worth more than yesterday but less than today.

Twenty years from now you will be more disappointed by the things you didn’t do than the things you did do

You cannot escape the responsibility of tomorrow by evading it today