99% of failures come from people who have the habit of making excuses.

Everything that happens was once a dream.

Don’t be afraid to work hard and find out how good you can really be.

A hero is no braver than an ordinary man, but he is braver five minutes longer.

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

Failure to prepare = preparing to fail

The journey of a thousand miles begins with one step. 

It doesn’t matter where you start, it matters how you end

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

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. 

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

There are no bad mistakes in maths, only discoveries.

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

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

You can pick up a mistake and carry it as a burden,  or you can set it down as use it as a stepping stone to greatness.