What is knowledge? What makes me, me? Do we have free will? People have been asking such fundamental questions about the nature of reality for centuries, but how can they help us make sense of our existence in a 21st-century world of social media, cyber wars, cloning, artificial intelligence and virtual reality? This provides the map you need to travel beyond traditional foundations and explore a diverse array of deep thinkers. Soul-searching questions prompt 'short cut' answers written by experts in their field, with each one the setting-off point for instructions that plot a path through the philosophical landscape. With 'one-stop' graphics visualizing a memorable theory or idea for each concept, and 'route map' glossaries explaining key words and their connections, it will help you wrestle with the meaning of ancient and modern philosophical thought.