I hear this a lot… But I really enjoyed Children of the Mind. I’m guessing people mostly don’t like it because it feels like it lines up too much with some LDS stuff… but if you just ignore that, or are blissfully unaware as I was when I first read it, it can be great and thought provoking.

Momo by Michael Ende. He also wrote The Neverending Story. Where The Neverending Story is about imagination, Momo is about listening and time.

I love that book! I try to read it once a year to keep the ideas lodged in my brain.