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

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

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

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

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.

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.

Ever since we invented fire and the wheel, we've been demonstrating both our ability and our inherent desire to fix things that we don't like about ourselves and our environment.