Tough times never last, but tough people do.

Failure to prepare = preparing to fail

I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.

Be strong enough to stand alone, smart enough to know when you need help, and brave enough to ask for it.

Dreams don't work unless you do.

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

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

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

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

You cannot escape the responsibility of tomorrow by evading it today

Don't put off until tomorrow what you can do today. If today you have no time, it means tomorrow you'll be too tired and the next day you'll be something else.

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

It is never too late to become what you might have been

Run in the morning before your body figures out what you're doing

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