Sometimes we get sad about things and we don’t like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don’t know why we are sad, so we say we aren’t sad but we really are.

I believe in the power of storytelling to change the world.

In mathematics, you don't understand things. You just get used to them.

The unity of mathematics is not imposed but discovered.

The key to solving complex problems is to break them down into smaller, more manageable parts.