I think, therefore I am.

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

Fall down seven times, stand up eight.

Just stick with it, what seems hard now will one day be your warm up.

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.

We are all maths people : step 1 - do maths and step 2 - be a person. 

Tough times never last, but tough people do.

If you really want something you’ll find a way. If you don’t you’ll find an excuse.

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.

You'll never change your life until you change something you do daily. The secret to success and change in found in your daily routine.

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

Don't be afraid to take an unfamiliar path.  Sometimes they're the ones that lead you to the best places.

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

I can is 100 times more important than IQ.

I had no time is no excuse. 1 hour is 4% of your day and 1 minute is 0.34 % of your day.