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

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

There is no difference between saving lives and extending lives, because in both cases we are giving people the chance of more life.

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.

[Anti-aging therapies will] never be perfect, but we'll be able to fix the things that 200-year-olds die of before we have any 200-year-olds, and the same for 300 and 400 and so on.

The right to choose to live or to die is the most fundamental right there is; conversely, the duty to give others that opportunity to the best of our ability is the most fundamental duty there is.

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

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.

What I actually wanted to do with my life is make a difference to the world. That led me into science very quickly.

If you look at winners of the Nobel Prize in biology, you'll find a fair smattering of people who don't know how to work a pipette.

What I'm after is not living to 1,000. I'm after letting people avoid death for as long as they want to.

Every path is the right path. Everything could've been anything else. And it would have just as much meaning.

The impetus to grow and live intensely is so powerful in me I cannot resist it. I will work, I will love my husband, but I will fulfill myself.

when life gives you lemons, don't try to make orange juice

Things last so much longer than people.

The truth is that in my job, becoming old and becoming extinct are one and the same thing.

Purchased experiences don't count.

He would usually study with a small group of students, men and women.

Who is respectable when thinking himself alone and free from observation will be so before the eye of all the world.

I try to work out more now. I have been really thinking about getting into yoga, though. I can use that, believe it.

Yet no one hears his own remarks as prose.