I relax completely when I'm at rest. I don't think of numbers; I don't think of work.

Numbers have life; they’re not just symbols on paper.

You develop a sympathy for all human beings when you travel a lot.

If you do not use a muscle or any part of the body, it tends to become atrophic. So is the case with the brain. The more you use it, the better it becomes.

Immorality does not consist in being different. It consists in not allowing others to be so.

Without mathematics, there’s nothing you can do. Everything around you is mathematics. Everything around you is numbers.

Why do children dread mathematics? Because of the wrong approach. Because it is looked at as a subject.