What we need in medical schools is not to teach empathy, as much as to preserve it - the process of learning huge volumes of information about disease, of learning a specialized language, can ironically make one lose sight of the patient one came to serve; empathy can be replaced by cynicism.

I'm the first to admit that the resolution of a hand feeling the belly doesn't compare with the resolution of a CAT scan scanning the belly, but only my hand can say that it hurts at this spot and not at this spot. Only my hand can say that.

There are moments as a teacher when I'm conscious that I'm trotting out the same exact phrase my professor used with me years ago. It's an eerie feeling, as if my old mentor is not just in the room, but in my shoes, using me as his mouthpiece.

Lest it sound as if I resent my day job, I have to say that my day job is the reason I write, and it has been the best thing for me as a writer.

Electricity is an example of a general purpose technology, like the steam engine before it. General purpose technologies drive most economic growth, because they unleash cascades of complementary innovations, like lightbulbs and, yes, factory redesign.

You know, bad poetry I wrote in high school can still be found on the Internet, and, you know, there's a Web log of our college newspaper. You know, there's so many different stages of my creative development are sort of on-record if somebody were to choose to look for them.

Creating a future requires a profound and yes, unrealistic, vision of what is possible. But it is fantasy and wonder that drive technology and innovation.

I was chubby in high school. I used to go to my information technology class, and I would type really fast to get the lesson done quick because the teacher had a little acoustic guitar, and there was a girl I had a crush on in the class. I would take the guitar and pretend to be some great singer-songwriter, serenade her with joke songs.