In principle, if you understood the mechanisms of keeping things repaired, you could keep things going indefinitely.

It was like stepping on to an escalator; I could do anything. I was just made for science.

The idea that ageing was subject to control was completely unexpected.

You would think that UV just causes mutations, but it doesn't, you need a gene to be active for it.

Life's too short to not be around nice people.

I eat some fruit every day, but not too much and almost no processed food. I stay away from sweets, except 80 per cent chocolate.

Imagine that: If you could change one of the genes in an experiment, an aging gene, maybe you could slow down aging and extend lifespan.

I have always gotten a thrill, a kick, from learning new things.

Age is the single largest risk factor for an enormous number of diseases. So if you can essentially postpone aging, then you can have beneficial effects on a whole wide range of disease.

Maybe one day we will be able to take a pill that keeps us young and healthy much longer. I believe in my heart that this will happen.

You could have two completely different careers if you could stay healthy to 90. How fascinating that would be.

I know about me. I am the moons sister, a tidal child stranded on land. The sea always in my ear, a surf of eternal discontent in my blood.

With God’s help in the grasp of addiction you’ll find the truth. When we understand this and its purity, then true healing can begin.

I could deny it if I liked. I could deny anything if I liked.

Courage is willingness to take the risk once you know the odds. Optimistic overconfidence means you are taking the risk because you don't know the odds. It's a big difference.

There is more respect to be won in the opinion of this world by a resolute and courageous liquidation of unsound positions than by the most stubborn pursuit of extravagant or unpromising objectives.

I very often used to get backaches due to the fact that I was wrong. Whenever you are wrong you have to fight or [take] flight. When [I] make the decision, the backache goes away.

Justice, though moving with tardy pace, has seldom failed to overtake the wicked in their flight. [Lat., Raro antecedentem scelestum Deseruit pede poena claudo.]

He was justifying his existence, than which life can do no greater; for life achieves its summit when it does to the uttermost that which it was equipped to do.

There is a difference between being a leader and being a boss. Both are based on authority. A boss demands blind obedience; a leader earns his authority through understanding and trust.

I know people for whom the search for how to be well has been a positive journey. It's empowering to face your issues and try and take care of yourself. It can be positive too.