It is never too late to turn an unproductive day into a productive one.

The greatest enemy to human potential is your comfort zone

Procrastination makes easy things hard and hard things harder.

Tough times never last, but tough people do.

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. 

We learn more from failure than we do from success.

Dreams don't work unless you do.

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

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

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

I can is 100 times more important than IQ.

I think, therefore I am.

Do what you have always done and you will always be what you have always been

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.

Shoot for the moon and even if you miss you’ll land among the stars/