In learning modern mathematics, real intelligence is not the skills or know-how learned but the abstract thinking. In the past, reaching this level of thinking proved difficult as relatively few students were well-equipped to think in this manner. In order to prepare students for abstract mathematics, many transitional books are available. However, these books primarily focus on the treatment of logic and the art of proof writing. In many cases, this approach intimidates student causing them to shy away from abstract mathematics altogether. The purpose of this book is to prepare the reader to think in a manner conducive to learning abstract mathematics. It is intended for readers of varying mathematical abilities with the goal of helping readers to appreciate and enjoy the beauty of modern abstract mathematics and to pique their interest in learning additional mathematical topics and ways of thinking. In order to keep the reader engaged, the author has attempted to use graphics and lively humor as well as concrete examples to illustrate the features of general concepts. This book, A Cartoon Primer of Modern Mathematics , is an essential supplement for students of all levels, in school, college, and beyond.