Tobacco, UV rays, viruses, heredity, and age are the main causes of cancer.

In general, all cancers have been traditionally characterized by the way they appear under the microscope and the organs in which they arise.

There are three great themes in science in the twentieth century : the atom, the computer, and the gene.

I had learned of Gertrude Steins bon mot that medicine opened all doors. This prompted me, in different moods, to view my future life as literary psychiatrist, globe-trotting tropical disease specialist, or academic internist.

A cancer is not simply a lung cancer. It doesn't simply have a certain kind of appearance under the microscope or a certain behavior, but it also has a set of changes in the genes or in the molecules that modify gene behavior that allows us to categorize cancers in ways that is very useful in thinking about new ways to control cancer by prevention and treatment.

Science can improve lives in ways that are elegant in design and moving in practice.

I had learned that science is a rewarding, active process of discovery, not the passive absorption of what others had discovered.