I think, therefore I am.

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

No matter how bad it gets, you’re still way ahead of those who haven’t even started.

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

Procrastination makes easy things hard and hard things harder.

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.

Tomorrow is worth more than yesterday but less than today.

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. 

Time is your friend, impulse is your enemy.

Success is a journey, not a destination.

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

Fall down seven times, stand up eight.

Lose an hour in the morning and you will spend all day looking for it.

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

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