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.

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

But we don’t think too well when we want too much.

Do not have your concert first and tune your instruments afterwards. Begin the day with God.

My father helped me leave. He said, 'It's all out there, it's not here.'

We have two lives; The soul of man is like the rolling world, One half in day, the other dipt in night; The one has music and the flying cloud, The other, silence and the wakeful stars.

What I do know is that if we are born again, I will meet you in another life, and if there is a river, you will wait on the shores for me to come to you, so that we can cross together.

Out upon it, I have loved Three whole days together; And am like to love three more, If it prove fair weather.

The only bitterness I had is: Where is the conversation on gender? That's been going on since there have been men and women, and still we're not hearing about what they're going through.

I guess I'm a spiritual secularist, if that's not an oxymoron. My paths of secularism and spirituality are the same: I try to do the appropriate thing at each moment.

If the guy has a gun, that's the power. He doesn't need to wave the gun; he just needs to point the gun in a very relaxed fashion.

Be in this moment, and free yourself of striving for something more or someone else.