Philosophy 101 is an introductory book to the discipline of Philosophy that focuses on the 101 most important people and concepts in philosophy. Using interesting information and examples from his college-level Philosophy courses, Vlach directs the reader to the most important topics in philosophy and explains, in easy-to-understand language, why those topics are so important to understand. Especially helpful are the "Big Idea" summaries before each entry that get to the heart of the matter at hand. This book is especially helpful to high school and college students looking for a non-intimidating introduction to the philosophy.