The journey of a thousand miles begins with one step.

Time is your friend, impulse is your enemy.

I have not failed, I've just found 10,000 ways that won't work.

Knowledge is of no value unless you put it into practice.

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

If you fail, next time fail better.

Don’t compare yourself to others. Compare yourself to the person you were yesterday.

Instead of finding reasons why you can't, find reasons why you can.

No matter how bad it gets, you’re still way ahead of those who haven’t even started.

The journey of a thousand miles begins with one step. 

The greatest enemy to human potential is your comfort zone

Success is not final, failure is not fatal.  It is the courage to continue that counts.

Lose an hour in the morning and you will spend all day looking for it.

You cannot start the next chapter of your life if you keep re-reading the last one.

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