I might have been just as happy to have been a practicing primary-care doctor. But as a medical student, I had interacted with patients suffering from neurodegeneration or acute clinical schizophrenia. It left an indelible mark on my memory.

As physics students, we are taught that physicists are smart, that chemists are moderately acceptable, and that biologists are certainly not very intelligent. So I wasn't inclined to take a biology course. But my father insisted, and maybe what he had in mind was that, if there were no jobs in physics, I would end up being a doctor.

One of the major lessons in all of biochemistry, cell biology and molecular medicine is that when proteins operate at the sub cellular level, they behave in a certain way as if they're mechanical machinery.

I started taking a basic biology course, and I really loved it. I started asking research questions incessantly. I was drawn very quickly to biology.

Science fiction writers, I am sorry to say, really do not know anything. We can't talk about science, because our knowledge of it is limited and unofficial, and usually our fiction is dreadful.

Oddly enough, my favorite genre is not fiction. I'm attracted by primary sources that are relevant to historical questions of interest to me, by famous old books on philosophy or theology that I want to see with my own eyes, by essays on contemporary science, by the literatures of antiquity.

My mother fed my love of demons, science fiction, and paranormal. She was a devout horror movie fan who kept me up until the wee hours to watch 'Outer Limits,' 'Night Gallery,' 'Twilight Zone,' and 'Star Trek.' We lived to watch those reruns.

As a child, I was fascinated by any branch of physical or biological science. Even today, I find great excitement in discovering the complexity and variability of the world we live in, getting a glimpse into the deeper reality that we mostly ignore in our everyday human activities.