Whenever you find yourself doubting how far you can go, just remember how far you have come.

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

Your limitation - its only your imagination.

Work on your weaknesses until they are your strengths and work on your strengths until they are second nature.

You can have results or excuses, not both

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

It doesn’t matter where you start, it matters how you end

Don't expect to be good at maths or understand things straight away. Be patient and persistent. Rome wasn't built in a day, but they worked on it every single day. 

I can is 100 times more important than IQ.

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

It always seems impossible until it's done.

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

You can hire a tutor but you can't hire someone to practice for you.

If you fail, next time fail better.

The greatest enemy to human potential is your comfort zone