We all have two lives. The second begins when we realise we only have one. 

Time is your friend, impulse is your enemy.

We learn more from failure than we do from success.

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

Failure to prepare = preparing to fail

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

Knowledge is of no value unless you put it into practice.

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

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. 

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

Pure mathematics is in its way, the poetry of logical ideas.

I can is 100 times more important than IQ.

There are no bad mistakes in maths, only discoveries.

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

There are no shortcuts to any place worth going.