It's not just about life, of course; it's about healthy life. Getting frail and miserable and dependent is no fun, whether or not dying may be fun.

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.

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

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

The biggest handicap in research is an ability to think outside the box. The handicap is being encumbered by all the conventional wisdom in a given field.

Accept the difficulty of what you cannot yet change. But do not accept the impossibility of ever changing it.

It's not just about life, of course; it's about healthy life. Getting frail and miserable and dependent is no fun, whether or not dying may be fun.