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.

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

Basically, the body does have a vast amount of inbuilt anti-ageing machinery; it's just not 100% comprehensive, so it allows a small number of different types of molecular and cellular damage to happen and accumulate.

I don't often meet people who want to suffer cardiovascular disease or whatever, and we get those things as a result of the lifelong accumulation of various types of molecular and cellular damage.

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

Always look people in the eye, even if they’re blind. Just say, I’m looking you in the eye