Tough times never last, but tough people do.

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

There are no bad mistakes in maths, only discoveries.

Run in the morning before your body figures out what you're doing

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.

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

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

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

Everything you want is on the other side of fear

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

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

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

It always seems impossible until it's done.

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

There is no talent here. There is hard work and obsession. You could be anyone if you put in the time.