You can have results or excuses, not both

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. 

Failure to prepare = preparing to fail

You cannot escape the responsibility of tomorrow by evading it today

I can is 100 times more important than IQ.

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

Nothing is impossible if you want it badly enough. Impossible = I'm possible.

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

Work on your weaknesses until they are your strengths and work on your strengths until they are second nature.

I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.

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

Fall down seven times, stand up eight.

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

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

1.00³⁶⁵=1 and 1.01³⁶⁵=37.7. Doing nothing at all versus small steps at a time.