Your genome knows much more about your medical history than you do.

A human body is a conversation going on, both within the cells and between the cells, and they're telling each other to grow and to die; when you're sick, something's gone wrong with that conversation.

I want to build a clock that ticks once a year. The century hand advances once every one hundred years, and the cuckoo comes out on the millennium. I want the cuckoo to come out every millennium for the next 10,000 years. If I hurry I should finish the clock in time to see the cuckoo come out for the first time.

People are mostly focused on defending the computers on the Internet, and there's been surprisingly little attention to defending the Internet itself as a communications medium. And I think we probably do need to pay some more attention to that, because it's actually kind of fragile.

I'm as fond of my body as anyone, but if I can be 200 with a body of silicon, I'll take it.

We're at a point in time which is analogous to when single-celled organisms were turning into multi-celled organisms. So we're the amoebas.

Last century, when the beams needed replacing, carpenters used oak trees that had been planted in 1386 when the dining hall was first built. The 14th-century builder had planted the trees in anticipation of the time, hundreds of years in the future, when the beams would need replacing. Did the carpenters plant new trees to replace the beams again a few hundred years from now?