"The author is an extremely good writer. His high level of enthusiasm for the subject matter and intimate knowledge of the subject is echoed throughout...." --Professor Charles Waters, Mankato State University "This book is an elegant unified presentation of the basic concepts of calculus. The conversational style makes the book very readable, not only for mature students, but also for students who have only taken a basic calculus sequence....Students learn not only how to prove a theorem, they also gain an insight in the nature of a proof." --Professor Jung H. Tsai, SUNY College at Geneseo