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

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

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

Tomorrow is worth more than yesterday but less than today.

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

You can be shown the path, but only you can make the first step.

Failure is NOT your destiny. Failure is the key to success.

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

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

Tough times never last, but tough people do.

He who has begun his task is half-way done. Have the courage to begin!

I think, therefore I am.

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.

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

If you can understand just one thing thoroughly, then you will understand everything.