Terrence Tao has published an incredibly comprehensive textbook that serves as a wonderful introduction to the subject for interested outsiders and undergrad students in mathematics. The work demonstrates Mr. Taos unique ability to combine his other worldly mathematical skill set with writing that is crisp and engaging. Motivating the study of analysis via the construction of the number systems vis vi peano arithmetic, provides the reader with a road map for properly conducting mathematical reasoning in highly abstract and proof based settings. Thereafter, Mr. Tao provides excellent treatment of sequences, series, and continuity. We are then introduced to the world of derivatives and integrals. Along the way Mr. Tao deals in quotes, anecdotes, and mathematical history with prose that you rarely find in mathematics textbooks of this calibre. This book was my introduction to the world of pure mathematics and it served me wonderfully. Mr. Tao truly is not just a mathematical genius, but a fully rounded savant. It wasn’t mathematics that found Tao, but rather that Tao found mathematics.