The AMS Bookstore’s description of his book Mathematical Analysis and its Inherent Nature begins, “Mathematical analysis is often referred to as generalized calculus. But it is much more than that. This book has been written in the belief that emphasizing the inherent nature of a mathematical discipline helps students to understand it better. ” This point of view sets the stage for a friendly and engaging textbook that is sure to appeal to students who are curious about the underlying mathematics behind single-variable calculus.