Gödel, Escher, Bach

Gödel, Escher, Bach is a book by Douglas Hofstadter. It's about how three famous people - logician Kurt Gödel, artist M.C. Escher, and composer Johann Sebastian Bach - all explored complex ideas, and connected to each other in interesting ways. It talks about how they used ideas from math, art, and music to help us think about how our minds work.