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.

Rock music was the death of jazz in a way. I know there's a bunch of people who say jazz isn't dead, but I mean, rock 'n roll, you play three chords to 20,000 people; jazz, you play 20,000 chords to three people.

In Google's world, public space is just something that stands between your house and the well-reviewed restaurant that you are dying to get to.

I have always been terrified of the death of my parents. I never knew if I could count on myself. I never knew if that would send me over the edge.

For us, the death of Osama bin Laden is a time of profound reflection. With his death, we remember and mourn all the lives lost on September 11. We remember and mourn all the lives lost in Iraq, Afghanistan, Pakistan. We remember and mourn the death of our soldiers.