This. This book is so much more than math. It's about using multidisciplinary approach to tackle a series of deep philosophical problems. The math-inclined crowd here unsurprisingly sees inspiration from the math perspective (which is a perfectly fine and valid view), but there's also a lot of ideas from art (Escher), music (Bach), and classic philosophy (both from Western and Eastern traditions!), not to mention as a book written in the 1970s, it is (AFAICT) well-informed in the a state of art theory of computation and bioinformatics.

The sheer breadth and depth of understanding from the author blew my mind away. I suspect my attitude towards cross-disciplinary learning was probably reinforced by reading the book.