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

You're not in competition with anyone but yourself. Outdo your past, not other people.

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

The journey of a thousand miles begins with one step. 

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

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

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

A hero is no braver than an ordinary man, but he is braver five minutes longer.

We learn more from failure than we do from success.

Focus on progress, not perfection. Practise a little bit every day - little and often  Slow and steady wins the race.

Time is your friend, impulse is your enemy.

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

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

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

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