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

Procrastination makes easy things hard and hard things harder.

Failure to prepare = preparing to fail

You cannot escape the responsibility of tomorrow by evading it today

The greatest mistake we make is living in constant fear that we will make one.

The journey of a thousand miles begins with one step.

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. 

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

We learn more from failure than we do from success.

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

Success is not final, failure is not fatal.  It is the courage to continue that counts.

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

Hope might be a good breakfast, but it makes a very poor dinner

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.

If you want to succeed, double your failure rate.