Mathematics Is not a spectator sport. The only way to learn mathematics is to do mathematics.

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

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

Tough times never last, but tough people do.

Time is your friend, impulse is your enemy.

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

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

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.

Failure to prepare = preparing to fail

The greatest glory in loving lies not in never falling, but in rising every time we fall.

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

Everything you want is on the other side of fear

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

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

Fall down seven times, stand up eight.