I. The Career of a Mathematician.- I. Youth (18091830).- Early Interests in Mathematics.- Student at the ?cole Polytechnique.- The Ponts et Chaus?es.- The Independent Researcher.- II. Climbing the Academic Ladder (18301840).- The Public School System.- The ?cole Centrale; Colladon and Sturm.- Scientific Societies; the Soci?t? Philomatique.- The Creation of New Fields.- The Creation of Liouvilles Journal.- Defeats at the Acad?mie and at the ?cole Polytechnique.- Magnanimity toward Sturm.- Success at the Coll?ge de France and at the ?cole Polytechnique.- A Vacancy in the Astronomy Section of the Acad?mie.- Opposition from Libri.- Liouville and Dirichlet against Libri.- Election to the Bureau des Longitudes.- III. Professor, Academician, and Editor (18401848).- Setting the Stage.- The ?cole Polytechnique.- Administrative Duties.- Liouvilles Cours dAnalyse et de M?canique.- Rigor.- Notes in Naviers R?sum?.- Other Related Works; Transcendental Numbers.- Influence.- Coll?ge de France.- Inspiring Courses.- A Scandalous Election; Liouville, Cauchy, and Libri.- Acad?mie des Sciences.- The Active Examiner.- Fermats Last Theorem.- International Contacts.- Prize Competitions.- The Bureau des Longitudes.- Cauchys Membership?.- Presentation of New Ideas.- Journal Editor.- Guiding Young Talents.- Le Verrier (Catalan and Delaunay).- From Irresolution to Authority.- Quarrel with Pont?coulant.- The Name Neptune.- Hermite, Bertrand, and Serret.- Two Reports.- Last Clash with Libri.- Hermite and Doubly Periodic Functions.- J. A. Serret; Elliptic Curves.- Galois Theory.- Foreign Visitors.- Steiner, The Dublin School, Geometry.- William ThomsonLord Kelvin.- A Coherent Mathematical Universe.- IV. The Second Republic (18481852).- Banquets R?formistes (1840).- Political Opposition (1840-1848).- The 1848 Revolution.- Candidate for the Constituting Assembly.- Member of the Constituting Assembly.- The Bitter Defeat (1849).- Reduced Mathematical Activity.- The Second Election at l9