I, Claudius (1934) by Robert Graves. It's a great piece of historical fiction, based in large part on Graves' translation of The Twelve Caesars by Suetonius. The book feels remarkably modern and personal, though; it’s the secret autobiography of Claudius, an historian in ancient Rome. When I first read it, I believed that Claudius had really written it!

Beyond that, I, Claudius is becoming more and more relevant to contemporary American politics every day. It's really astonishing.

There are so many options that giving a strong answer is impossible. I’m willing to recant everything in here.

“Should read” as in “should enjoy”: either Terry Pratchett or Victor Hugo, pretty much anything from either of them. I’d throw in also Dostoyevski and Le Guin. Pick a book from them and utterly enjoy every word, the world, the people that populate it, the driving concepts that structure the narrative.

“Should read” as in “important information”: Chomsky maybe? Yeah, let’s say Chomsky, in particular any chapter of Understanding Power. Or maybe Washington Bullets? Also extremely informative. Or Why we’re polarized. I’ll stop here, there are just too many options. All of these are historico-political books, mostly about how the US politcs has evolved over time, talking about internal media and propaganda, US interference into other countries, and the creation of the two party hatred system.

A dictionary

Solaris by Stanislaw Lem. A captivating exploration of the human psyche. Deeply philosophical, eerie and romantic at the same time. It's one of the most unusual science fiction books I've ever read.