Probably the most important reason we are seeing more cancers than before is because the population is ageing overall. And cancer is an age-related disease.

Cell culture is a little like gardening. You sit and you look at cells, and then you see something and say, 'You know, that doesn't look right'.

Most discoveries even today are a combination of serendipity and of searching.

There is a duality in recognising what an incredible disease it is - in terms of its origin, that it emerges out of a normal cell. It's a reminder of what a wonderful thing a normal cell is. In a very cold, scientific sense, I think a cancer cell is a kind of biological marvel.

Most days, I go home and I feel rejuvenated. I feel ebullient.

Could your medicine be a cell, not a pill? Could your medicine be an organ that's created outside the body? Could your medicine be an environment?

History repeats, but science reverberates.