The greatest enemy to human potential is your comfort zone

A hero is no braver than an ordinary man, but he is braver five minutes longer.

Nobody said it’d be easy, they just promised it would be worth it.

Time is your friend, impulse is your enemy.

You're not in competition with anyone but yourself. Outdo your past, not other people.

Each day is an opportunity to improve. Aim to be that little bit better than yesterday and better tomorrow than today.

The wise person knows that no answer is also an answer

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

There are no bad mistakes in maths, only discoveries.

Dreams don't work unless you do.

The master has failed more times than the beginner has even tried

Success is the sum of small repeated efforts, day in and day out.

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. 

The road to success is like a staircase. If you want to succeed, double your failure rate

Procrastination is the thief of time and the enemy of success.