A positive attitude does not cure cancer, any more than a negative one causes it.

One swallow is a coincidence, but two swallows make summer.

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

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.

I left Delhi in 1989 and remember very little of how life used to be then. Increasingly, in my recent visits to Delhi, I've started to realize that the city has become intellectually very lively. It makes me want to discover the city over and over again.

This was yet another colonial fascination: to create the conditions of misery in a population, then subject it to social or medical experimentation.

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?