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.

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

Tough times never last, but tough people do.

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

Twenty years from now you will be more disappointed by the things you didn’t do than the things you did do

The wise person knows that no answer is also an answer

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

There are no bad mistakes in maths, only discoveries.

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

Skills are built not born.

There is no elevator to success, you have to take the stairs.

Failure to prepare = preparing to fail

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

He who has begun his task is half-way done. Have the courage to begin!