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

Our fixed mindset builds our cage, fear keeps us in it.

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

Don't put off until tomorrow what you can do today. If today you have no time, it means tomorrow you'll be too tired and the next day you'll be something else.

We learn more from failure than we do from success.

I can is 100 times more important than IQ.

The greatest mistake we make is living in constant fear that we will make one.

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

Everything you want is on the other side of fear

The journey of a thousand miles begins with one step.

The journey of a thousand miles begins with one step. 

Skills are built not born.

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

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

There are no bad mistakes in maths, only discoveries.