Why does philosophy give some people a headache, others a real buzz and yet others a feeling that it is subversive and dangerous? Why do a lot of people think philosophy is totally irrelevant? What is philosophy anyway? The ABCs of philosophy-easy to understand but never simplistic. Beginning with basic questions posed by the ancient Greeks: What is the world made of? What is man? What is knowledge? What is good and evil? this guide traces the development of these questions as the key to understanding how Western philosophy developed over the last 2,500 years.