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

Good physicians are rarely dispassionate. They agonize and self-doubt over patients.

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

It remains an astonishing, disturbing fact that in America - a nation where nearly every new drug is subjected to rigorous scrutiny as a potential carcinogen, and even the bare hint of a substance's link to cancer ignites a firestorm of public hysteria and media anxiety - one of the most potent and common carcinogens known to humans can be freely bought and sold at every corner store for a few dollars.

Postwar U.S. was the world's leader in science and technology. The investment in science research was staggering.

All cancers are alike but they are alike in a unique way.

In the laboratory, we call this the six-degrees-of-separation-from-cancer rule: you can ask any biological question, no matter how seemingly distant-what makes the heart fail, or why worms age, or even how birds learn songs-and you will end up, in fewer than six genetic steps, connecting with a proto-oncogene or tumor suppressor.