Every challenge is an opportunity to grow.

The only certainty is uncertainty.

If you do something once, people will call it an accident. If you do it twice, they call it a coincidence. But do it a third time and you've just proven a natural law.

We are going to die, and that makes us the lucky ones. Most people are never going to die because they are never going to be born.

The deepest theorems often have the simplest proofs - if you look at them from the right angle.