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. 

The journey of a thousand miles begins with one step.

Hard work - a two way street where you get exactly what you put in.

The road to success is like a staircase. If you want to succeed, double your failure rate

I can is 100 times more important than IQ.

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

Everything you want is on the other side of fear

Just stick with it, what seems hard now will one day be your warm up.

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

Work ethic is important, because, unlike intelligence, athleticism, or charisma, or any natural attribute, it’s a choice.

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

Do Not Be Afraid To Make Mistakes. Each mistake teaches us something.

A book a day keeps the stupidity away.

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

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