Binding: Paperback
List price: $7.99 USD

This book meant a lot to me, it was the book that opened my eyes to the world of philosophy and actually discussed those questions I, like many others, had always been pondering. It's an extremely well-written introduction to the greatest thinkers and woven into that, a plot that will keep you hooked and will make you start wondering about your own existence.

Amazon.com Book Review

Wanting to understand the most fundamental questions of the universe isn't the province of ivory-tower intellectuals alone, as this book's enormous popularity has demonstrated. A young girl, Sophie, becomes embroiled in a discussion of philosophy with a faceless correspondent. At the same time, she must unravel a mystery involving another young girl, Hilde, by using everything she's learning. The truth is far more complicated than she could ever have imagined.