99% of failures come from people who have the habit of making excuses.

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

Failure to prepare = preparing to fail

Pure mathematics is in its way, the poetry of logical ideas.

The power of reflection is the most powerful skill you’ll learn.

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

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

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

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

If you fail, next time fail better.

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

The master has failed more times than the beginner has even tried

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

If you really want something you’ll find a way. If you don’t you’ll find an excuse.

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