All good research-whether for science or for a book-is a form of obsession.

Sexual desire is a state not unlike hunger.

I dont fear death so much as I fear its prologues: loneliness, decrepitude, pain, debilitation, depression, senility. After a few years of those, I imagine death presents like a holiday at the beach.

I am very much out of my element here. There are moments, listening to the conversations going on around me, when I feel I am going to lose my mind. Earlier today, I heard someone say the words, "I felt at one with the divine source of creation." Mary Roach on a conducted tour of Hades. I had to fight the urge to push back my chair and start screaming: STAND BACK! ALL OF YOU! I'VE GOT AN ARTHUR FINDLAY BOX CUTTER! Instead, I quietly excused myself and went to the bar, to commune with spirits I know how to relate to.

Yes, the money could be better spent on Earth. But would it? Since when has money saved by government redlining been spent on education and cancer research? It is always squandered. Let's squander some on Mars. Let's go out and play.

I don't write on topics that require a lot of urgency. But in 'Stiff,' I wanted to change people's hearts about organ donation. Whenever I get a chance, I try to talk about that.

If you could really guarantee that the money would be spent on something more worthwhile, I'd say, absolutely, scrap the space program, but it never works that way.