The wise person knows that no answer is also an answer

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

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

I had no time is no excuse. 1 hour is 4% of your day and 1 minute is 0.34 % of your day.

The greatest enemy to human potential is your comfort zone

There are no bad mistakes in maths, only discoveries.

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

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

Failure to prepare = preparing to fail

It is never too late to become what you might have been

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

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.

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. 

Whenever you find yourself doubting how far you can go, just remember how far you have come.