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. 

Time is your friend, impulse is your enemy.

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

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

Nobody said it’d be easy, they just promised it would be worth it.

Your attitude is everything. Pick a good one.

If you want to succeed, double your failure rate.

You're not in competition with anyone but yourself. Outdo your past, not other people.

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

Failure is NOT your destiny. Failure is the key to success.

Mathematics Is not a spectator sport. The only way to learn mathematics is to do mathematics.

If you can understand just one thing thoroughly, then you will understand everything.

Each day is an opportunity to improve. Aim to be that little bit better than yesterday and better tomorrow than today.

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

A book a day keeps the stupidity away.