This fun and informative introduction to the history of philosophy and its key figures and movements, from stoicism to existentialism, is for any child asking "what is philosophy?" Questions like "who am I?", "why does the world exist?" and philosophical theories from Plato to Sartre are made easy to understand using clear examples, timelines, and at-a-glance facts. If your child is curious about the world and the thinkers who shaped it, the Children's Book of Philosophy is for them.