Instead of finding reasons why you can't, find reasons why you can.

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

The boxer is not afraid of being knocked down, he is afraid of not being able to get up again.

I think, therefore I am.

Knowledge is of no value unless you put it into practice.

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

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

Patience is when you’re supposed to get mad, but you choose to understand

Success is the sum of small repeated efforts, day in and day out.

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

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

The master has failed more times than the beginner has even tried

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

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. 

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