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. 

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

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

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

Don't put off until tomorrow what you can do today. If today you have no time, it means tomorrow you'll be too tired and the next day you'll be something else.

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

Don’t compare yourself to others. Compare yourself to the person you were yesterday.

The journey of a thousand miles begins with one step.

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.

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

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

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

The journey of a thousand miles begins with one step. 

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

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