All the best essays are epistemological journeys from ignorance or curiosity to knowledge.

The one thing that you can say about the new Cabinet Donald Trump is putting together. That seems to be one of the coherent themes. They're very, very skeptical about Iran.

I would hope that nothing that I write would ever seem earnest because I subscribe absolutely to Franz Nietzsche's claim when he says, "Ah, earnestness, the sure sign of a slow mind." Earnest people are always a bit on the thick side in my experience.

The thing that strikes me, from looking at the names so far in the Donald Trump's Cabinet on the foreign policy side, is the one thing that unites them - and that's General James Mattis at the Pentagon, Mike Pompeo at the CIA, even Mitt Romney to become secretary of state - they're all very, very hawkish on Iran.

Nicholson Baker talks about the way in which the most successful nonfiction books are those that can be boiled down into an argument so that everybody can wade in with an opinion without having to undergo the inconvenience of having to read the book itself. The more you can condense it, the better.

One of the reasons so many nonfiction books are so boring is because what they've done, very diligently, is fulfill the terms of their proposals. They've written up their proposal, long-form, and often what this does is then set up a sort of serial deal, where the whole book can essentially be reduced back to the size of the original proposal!

All sorts of things can keep one awake. But as you get older - this is what the stroke thing really brought home to me - this thing that I never paid attention to: my brain. I've always been conscious that, of course, after a night of getting stoned, my head would feel foggy; if I got drunk the night before I'd be hungover. But that was the extent of my concern about my brain. And then with the stroke thing, it made me realize, "God! That's my main source of income." So it relates actually to your other question about growing old.