Chapter 32 The Garden Party
Hilde pauses in her reading to think about the way that her father has managed to send so many messages to her in the book. Then she reads on. Sophie bumps into her mother on the bus ride home and her mom reads a bit of Sophie’s World but does not seem too surprised. They make it through a demonstration on their street and then spend the rest of the day preparing. Joanna helps them set up the next day. The guests begin to arrive, and soon everyone waits for Alberto. Alberto arrives late, sets off a few firecrackers, and sits down after Sophie’s mom makes a short speech. Suddenly Joanna begins kissing Jeremy, one of the boys. Soon, Joanna and Jeremy are rolling in the grass together while everyone except Sophie and Alberto watches. Alberto tells everyone the truth about their existence—that they are all merely figments of the imagination of Albert Knag. Things begin to get out of hand, and Alberto and Sophie disappear just as the book comes to a close...
母親讀了《蘇菲的世界》，但她似乎並不怎麼好奇。聚會上，艾伯特做了一個演講，告訴大家這是虛幻的世界，園中的客人被激怒，艾伯特和蘇菲在混亂中消失.
Chapter 33 Counterpoint
Hilde cannot figure out what happened to Sophie and Alberto and she thinks she must read the book a few more times to find some clues. Sophie and Alberto escape from Albert Knag and find themselves in Oslo. Alberto assures Sophie that they are outside of Hilde’s father’s reach, but points out that he may have wanted them to escape because he created the chaos that let them slip away. Sophie figures out that people cannot hear them, and Alberto points out that even though they are no longer a part of the major’s book they are also not like other people. They take a make-believe car and drive off to be there when Albert Knag meets his daughter in Lillesand.
Albert Knag lands in the Copenhagen airport and is immediately paged. He is given a letter, from his daughter, which gives him some instructions. Then as he passes a deli he sees another envelope with his name on it that tells him what to buy in the store. Albert Knag thinks he is being observed and he spends the rest of his wait in the airport following instructions from letters and is quite paranoid on his plane ride home.
Sophie and Alberto are driving, but Sophie is concerned because they can go right through everything and she thinks they are less real than everything around them. Alberto says the opposite is true—they can go through everything else because they are more solid than the rest. They are spirit, and spirit can move through anything. They stop for coffee and meet an old woman who is also of spirit, out of Grimm’s Fairy Tales. She tells them they are part of the invisible people and they see many others whom they had once thought were imaginary.
Albert Knag realizes his daughter has given him a dose of his own medicine and it continue the entire trip home. Hilde has messages to him everywhere. Finally he arrives at home. Just at that moment Sophie and Alberto arrive and Sophie runs down to Hilde. She tries to speak to her, knowing she cannot succeed, but is surprised to see that Hilde seems to sense something. Then her father calls her name. Hilde and her father talk about everything, laughing and enjoying themselves, and Hilde again thinks she hears something. What she heard was Alberto honking the car horn. Sophie is sad that she cannot live a real life but Alberto points out that they will live forever and that there is much for them to do.
蘇菲和艾伯特從書本的世界中逃脫，來到了奧斯陸(Oslo)，他們變成了隱形人，像精靈一樣「穿過」了周圍的物體，身邊的人看不見他們；席德按照父親的方式對他還之以牙，為蘇菲報了一箭之仇；蘇菲出現在席德身邊，對著她講話，席德雖然聽不見，但是好像有所感應。
Chapter 35 The Big Bang
While Hilde’s father tells her about the universe and the Big Bang, Sophie tells Alberto she thinks they can have an effect in Hilde’s world. She hits Hilde in the face with a wrench and Hilde yelps in pain, thinking a gadfly stung her. Hilde thinks she feels Sophie’s presence. Alberto is impressed. Albert tells his daughter that we are all a part of the same whole, since everything started with the Big Bang. So an attempt to understand the universe is an attempt to understand ourselves. Sophie and Alberto manage to get the rowboat loose, and Albert makes fun of his daughter by suggesting that maybe Sophie did it.
這一章上校為席德講解宇宙大爆炸，前沿科學和哲學、歷史緊密聯繫。如果用宇宙大爆炸的理論解釋前文講過的兩種時空觀，那麼基督教式的線性歷史觀(linear history)就可解釋為：歷史隨著宇宙的擴張不斷往前推進；而印歐文化下的環形的歷史觀(cyclical history)則可理解為宇宙在擴張的同時也在收縮。