Textbooks even excellent ones are a reflection of their times Form & content of books depend on what the students know already what they are expected to learn how the subject matter is regarded in relation to other divisions of mathematics & even how fashionable the subject matter is It is thus not surprising that we no longer use such masterpieces as Hurwitz & Courant's Funktionentheorie or Jordan's Cours d' Analyse in our courses The last two decades have seen a significant change in the techniques used in the theory of functions of one complex variable The important role played by the inhomogeneous Cauchy-Riemann equation in the current research has led to the reunification at least in their spirit of complex analysis in one & in several variables We say reunification since we think that Weierstrass Poincare & others (in contrast to many of our students) did not consider them to be entirely separate subjects Indeed not only complex analysis in several variables but also number theory harmonic analysis & other branches of mathematics both pure & applied have required a reconsidera- tion of analytic continuation ordinary differential equations in the complex domain asymptotic analysis iteration of holomorphic functions & many other subjects from the classic theory of functions of one complex variable This ongoing reconsideration led us to think that a textbook incorporating some of these new perspectives & techniques had to be written