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

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. 

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

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

Failure to prepare = preparing to fail

The journey of a thousand miles begins with one step. 

There are no shortcuts to any place worth going.

You cannot escape the responsibility of tomorrow by evading it today

Fall down seven times, stand up eight.

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

The bad news is time flies, the good new is that you're the pilot.

I can is 100 times more important than IQ.

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

It is never too late to turn an unproductive day into a productive one.

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