As I studied philosophy for some years, that is the basic topic for me. Aristotle was the first author I liked a lot, in particular his practical philosophy. I think Aristotle's Politics and Ethics are probably the best books of the ancient world. As someone said, few persons started a science, Aristotle started many of them as a systematic work. Logic, Biology and Economics come to my mind.
I have a lot of interest in some kind of discourse, what I call the mythic word. Legends, myths and religion stuff. Robert Graves studies are awesome, and also Campbell (Friend of George Lucas, he influenced Star Wars, I heard.)
After some time, I started to read Kant, Hegel, Husserl and Heidegger. I got fascinated about the time problem in the German philosophy. Sein und Zeit was my bible for some time.
Since my first reads, I liked logic a lot. Russell, Wittgenstein and Quine. Lately, Tarsky become one of my favorites on that topic.
About my fav books, "Cronicas del A
ngel Gris" (The Gray Angel Chronicles)by Alejandro Dolina is the one I love more. It is an Argentinian author. He also makes a radio show, where he speaks about philosophy, history, literature and gambling
, every midnight. It has a lot of quotes and references, it basically introduced me to all the big authors and the essential topics. There is Borges also, "Fictions" is the best I think. I love some kind of genre he invented, the "fictional essay". Dolina takes that for his book. He writes about, for example, a fictitious country, but in a realistic, scientific tone. As Tolkien, he emulates the mythic and ancient discourses many times in some way. I read Tolkien a lot. Poe, Lovecraft, Carlyle , Wilde, I enjoyed them too.
Programming books are totally allowed here, I am on python now, reading the basics, the tutorial, learning python, dive into python and such.
I don't believe books are "sacred" or something like that, and no book is a must for everybody, but I do think the custom of reading is something desirable. I have had many of my best moments with books. Formal Logic is probably the more useful thing you can find. If you know that, you can read the rest of the books in the half of the time