Ageing is, simply and clearly, the accumulation of damage in the body. That's all that ageing is.

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.

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.

Theres nothing wrong with making the best of ones declining years, but what does annoy me is the fatalism. Now that were seriously in range of finding therapies that actually work against ageing, this apathy, of course, becomes an enormous part of the problem.

Wikipedia was a big help for science, especially science communication, and it shows no sign of diminishing in importance.

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

I think it's reasonable to suppose that one could oscillate between being biologically 20 and biologically 25 indefinitely.