A Beginner's Guide to Constructing the Universe - The Mathematical Archetypes of Nature, Art and Science - A Voyage from 1 to 10 - Michael S. Schneider
This was actually surprisingly informative - and - like Hegel, JS Mill and now Schneider, the world is well explained. Everything from the possibilities of numbers in 2, 3 and 4 dimensions, how they relate to world religions, spirituality, art, science, how different numbering systems (for examples the Greeks started counting at 3) worked and the reasoning behind, how it was encoded in the names of the Gods and myths, and knowledge was passed from initiate to initiate...
There are embedded in this compelling "proofs", if you'd have it that way, the the universe is of a designed and deeply spiritual construction, but as well argues that - at least as we experience it - it could be no other way.
Inspirational in an artistic sense, going far beyond the Golden Mean, and grounding in the history and symbolism of math opens up some very interesting possibilities ...