In the eye, there is a type of junk that accumulates in the back of the retina that eventually causes us to go blind. It's called age-related macular degeneration.

I'm the chief science officer of a foundation that works on the application of regenerative medicine to the problem of aging.

If changing our world is playing God, it is just one more way in which God made us in His image.

Celebrating the future is about celebrating a better world: a world in which everyone's life is easier and their health is maintained longer. It’ll be a life where there’s more time for leisure - for enriching each other’s lives rather than just running to stand still. In other words, more holiday time! So a holiday is absolutely the appropriate way to help us focus on it and make it a reality soon.

My approach is to start from the straightforward principle that our body is a machine. A very complicated machine, but none the less a machine, and it can be subjected to maintenance and repair in the same way as a simple machine, like a car.

I don't work on longevity, I work on keeping people healthy.

What I'm after is not living to 1,000. I'm after letting people avoid death for as long as they want to.