The last thing you ever want to do is extend the period of frailty and disability and make people unhealthy for a longer time period. So lifespan extension in and of itself should not be the goal of medicine, nor should it be the goal of public health, nor should it be the goal of aging science.

Once you avoid the things that accelerate aging like smoking, obesity, excessive alcohol consumption, and excessive sun exposure, you've done about as much as you can to influence your aging process.

We have grown accustomed to the wonders of clean water, indoor plumbing, laser surgery, genetic engineering, artificial joints, replacement body parts, and the much longer lives that accompany them. Yet we should remember that the vast majority of humans ever born died before the age of 10 from an infectious disease.

Ageing is very rare. We only see it in humans and laboratory animals and in zoo animals and in our pets. Basically, organisms that are protected from the external world. Once you create that protection, you live long enough to see ageing.

Any good trial lawyer knows that if you've got one credible expert or scientific study, then you can let the jury decide.

At the moment I'm enjoying a new challenge at the Royal Opera House, but I'm also keen to pursue my interest in television and particularly in science.

There's something really beautiful about science, that human beings can ask these questions and can answer them. You can make models of nature and understand how it works.

Sailing is a big outlet for me. It's one of the key things I've been able to do by commingling science with sailing and my love of the sea. Also, I have several motorcycles, and I like to go on motorcycle trips.