Prelude -- Journey at the Turn of the Century -- The House in Djursholm -- Family and Childhood -- Leffler and Mittag -- Gösta's Parents -- The Teacher's Family in Stockholm -- Four Years at Stockholm Gymnasium -- Studies -- First Semester in Uppsala -- Festivities and Student Drills -- Summer on the West Coast -- The Aristocracy of Lennartsnäs -- Controversy over the Academic Degree Regulations -- His Sister's Debut and His Father's Illness -- First Trip Abroad -- The Stablemaster at Övrejärva -- Doctoral Degree -- Docent in Uppsala -- A Turning Point -- With a Room in Paris -- In Göttingen -- With a Base in Berlin -- Traveling to Helsingfors -- In the Finnish Capital -- Waiting Time -- Professor, Husband, and Entrepreneur -- Installation in Helsingfors, Anniversary Celebration in Uppsala -- In "The Land Called Suomi" -- First Encounter with Italy -- Meeting Signe -- Acta Mathematica -- Wedding and Honeymoon -- New Roles in Stockholm -- Acta and the College -- Sonya K. and the "Brilliant" Life -- Winter Travels -- Summer in Switzerland -- Strife in the Academy of Sciences -- Rector of the College -- Social Entertainments Abound -- A Terrible Summer -- Involved in All Manner of Things -- Traveling to Algeria -- Meeting in Wernigerode -- A New Shift in Stockholm -- King Oscar's Prize -- New Efforts on Sonya's Behalf -- Fame, Friends, and Enemies -- Construction in Djursholm -- Sonya's Death -- Life Goes On - I -- Donation to the College -- Business Affairs, Birth and Death -- Life Goes On - II -- Battlefields -- Celebrating His 50th Birthday -- Seeking a "Practical, Useful Result" -- A Marriage Teetering on the Brink -- One Thing After Another -- On the Verge of Bankruptcy -- Celebrating Niels Henrik Abel -- Two Funerals -- The Nobel Prizes, Another Battle -- The Almanac Dispute -- Signe's Inheritance -- Political Ambitions and Huge Business Ventures -- Celebrating His 60th Birthday -- King Oscar's Death -- More Celebrations and More Disputes -- The Big Poincaré Campaign -- From Dreams of Power to Resignation -- A New Home in the Dalarna Region -- Travels, Congresses, Prizes -- The Case Against Prime Minister Staaff -- World War, Writing His Will and Testament -- Establishment of a Mathematics Institute -- International Cooperation After the War -- Signe's Death -- Still on the Move -- New Travels and Financial Setbacks -- Last Years.