I have this ratio that if you divide age of entrepreneur by market cap of company. For Facebook it's one. Every year of his life Zuckerberg has been making $1 billion for investors.

Facebook now is mostly about people you know. In the future it could be about people you know less but are more important.

The hardware and the software used in the Breakthrough project will be compatible with other telescopes around the world, so they too can search for intelligent life.

It’s not about revenues: the fundamental economics in digital business is scale and margins. The top line has become the bottom line.

It is hard to think of practical applications of the black hole. Because practical applications are so remote, many people assume we should not be interested. But this quest to understand the world is what defines us as human beings.

Fundamental physics is like an art more or less. It's completely non-practical, and you can't use it for anything. But it's about the universe and how the world came into being. It's very remote from your daily life and mine, and yet it defines us as human beings.

I'm just focused on exploring new opportunities.