Very western-focused intro to philosophy. When the book starts to touch on Eastern or Islamic philosophies, it got a bit cringey, but could be forgiven as the letters were written to a Norwegian child and in the ‘80s. I would have appreciated such an intro when I was getting into learning about Ancient Greece. The storyline of Sophie and the mysterious philosopher and Hilde did not hold my interest much, but it’s an interesting premise to explore different philosophical schools of thought.