The temptation to quit will be the greatest when you are about to succeed

The greatest enemy to human potential is your comfort zone

Never underestimate the importance of small steps. small steps = big changes. 

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

There is no elevator to success, you have to take the stairs.

Time is your friend, impulse is your enemy.

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

Be strong enough to stand alone, smart enough to know when you need help, and brave enough to ask for it.

Focus on progress, not perfection. Practise a little bit every day - little and often  Slow and steady wins the race.

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

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

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

I can is 100 times more important than IQ.

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

I have not failed, I've just found 10,000 ways that won't work.