Kolakowski is great as an author of philosophical books for both professional philosphers and non-philosophers. In "Why is There..." he goes through famous philosophers throughout history. He does not give a full picture of philosophical systems, he clearly declares at the beginning that he is going to pick only very specific topics within each of the famous or interesting philosphers. Each chapter (one chapter - one philosopher) ends with philosophical questions triggered by the philosopher described in it. It is fascinating journey through philosophy. Not for students but for people who want to be amazed by human thought and who want to enjoy a bit of really good philosophy delivered in a very understandable way.