The synoptic gospels and NT, but to choose one book from the NT, ... The Epistle of James - as it has some strong counterpoints to other parts of the NT particularly the contrast of Pauline notions of grace with charity/works. Emperor's New Mind, Penrose - probably my biggest take away from it was to consider how human perception works alongside, and co-mingles with, physics. Web of Life, Capra - considering holistic nature of life, one's connection to the World at large; emergent patterns, complex structure birthing from simplicity (goes well with what I recall of Gleick's Chaos). Zen and the Art ... - what is value, what is valuable to me, whither/whence/wherefore value; how should I relate to my children (long before i had any) and how to challenge them philosophically. Republic, Plato - the first book that really set me thinking about the structure of society, about inequalities. And of course about stepping out of The Cave.…
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