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

Mistakes have the power to turn you into something better than you were before.

Don't be afraid to take an unfamiliar path.  Sometimes they're the ones that lead you to the best places.

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

Everything you want is on the other side of fear

Work ethic is important, because, unlike intelligence, athleticism, or charisma, or any natural attribute, it’s a choice.

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

Don't fear failure, fear being in the same exact same place next year as you are now.

Go as far as you can see, when you get there, you’ll be able to see further

Success is a journey, not a destination.

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. 

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

99% of genius comes from hard work, the remaining 1% comes from innate talent

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

You can have results or excuses, not both