Ah, a literalist. I see your literality, and raise: enabled a pivotal moment in my life Like that time you beat Archimedes to the punch and moved the world with a cantilever? To not just 'standup philosopher'-post: Gödel, Escher, Bach (already mentioned by another I see); Euclid's Elements; Polya's How To Solve It; The Rise and Fall of the Third Reich; Old Possum's Book of Practical Cats - clearly non-fiction, if you know cats. :)
Also recommended in this reply