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

There are no bad mistakes in maths, only discoveries.

The greatest enemy to human potential is your comfort zone

A book a day keeps the stupidity away.

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

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

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

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. 

Don’t be afraid to work hard and find out how good you can really be.

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

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.

You cannot escape the responsibility of tomorrow by evading it today

Just stick with it, what seems hard now will one day be your warm up.

If you want to succeed, double your failure rate.

Everything that happens was once a dream.