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

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

Failure to prepare = preparing to fail

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

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

Everything that happens was once a dream.

We all have two lives. The second begins when we realise we only have one. 

Procrastination makes easy things hard and hard things harder.

Don’t hang your targets after you’re done shooting.

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

The boxer is not afraid of being knocked down, he is afraid of not being able to get up again.

Tough times never last, but tough people do.

Failure is not the opposite of success, it is part of the success.

I think, therefore I am.

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