I would be interested in hearing nominations by HN readers of good English nonfiction books published in the twentieth century. Presumably, the selection bias in this voluntary response poll would include the interest predilections of HN readers, but that's a selection bias that might very likely choose some books that I would like.
I noticed that, I have it on my shelf and I'm trying to convince my wife to read it. I've also been trying to get her to read Feynman's biographies, because I think he has one of the best thought-processes I've ever come to understand.
I saw that and wondered why they didn't just include the entire Feynman Lecture series. The list wasn't supposed to be the most approachable non-fiction books. But then "best" is vague enough to be interpreted that way, I suppose.