And by this, Warrior means self-improvement books, motivational pieces, and classical works. At first, I was a bit stymied by the general nature of this rule (especially since many modern-day self-improvement books would conflict with Warriors sensibilities), but then he recommended the Great Books of the Western World. I was not familiar with this series of books, sold by Encyclopedia Britannica starting in the 1950s. There are over 50 volumes, covering such topics as mathematics, philosophy, classic literature and plays, astronomy, critical thinking, political science and religion. Theres enough in the Great Books to keep one occupied for a good long time, preventing the kind of judgement calls required to choose books outside of Warriors prescribed reading list. I would be nervous to see Warriors Machete at work in my local book store, particularly the self-help section. I would have trouble saying no to my occasional guilty-pleasure works of fiction, especially since Warrior said that we are to ONLY read the good stuff. No littering the mind and whatnot. But the Great Books collection is an interesting endeavour, originally meant to gift mankind with a greatest hits of the Western world. According to Wikipedia, the initial publication was a flop, and they had to resort to selling door-to-door. The editors were disappointed that these high-minded tomes had to take the same route as the more common encyclopedia kits. Nevertheless, you should have enough time to read these because youve by now also dispensed with the internet anyways.