Sophie's World characters

Appears from the start

A fourteen-year-old Norwegian schoolgirl who lives with her mother and several pets while her father is often away at sea. Shortly before her fifteenth birthday, anonymous questions about identity and existence draw her into a private philosophy course and an increasingly strange mystery.

Appears from the start

Sophie's closest school friend. More interested in ordinary teenage life than abstract speculation, she provides Sophie with a connection to everyday concerns as the secret philosophy course begins to consume her attention.

Appears from the start

Sophie's practical, affectionate parent, who works while raising her daughter largely alone because her husband is frequently at sea. She becomes worried by Sophie's evasions, new ideas, and unexplained older correspondent.

Appears from the start

A ship's captain who spends long periods away from home. His absences help make Sophie unusually independent, though she and her mother remain aware of him through letters and occasional visits.

First appears in chapter 3

A girl close to Sophie's age whose name appears on postcards delivered inexplicably to Sophie. The messages are birthday greetings from Hilde's father, and their arrival among Sophie's philosophy lessons makes Hilde central to the mystery even before the two girls have any direct contact.

Also known as The Major

First appears in chapter 3

Hilde's father, a Norwegian major serving with the United Nations in Lebanon. He sends his daughter birthday greetings through addresses and circumstances linked to Sophie, suggesting that he knows about her private lessons and can intrude on them from afar.

First appears in chapter 7

A Labrador that delivers philosophy material and guides Sophie to her teacher. As an ordinary animal carrying messages between unusual locations, Hermes becomes both a practical link to the course and another sign that Sophie's daily world is being carefully arranged.

First appears in chapter 11

The philosopher behind Sophie's anonymous correspondence course. He teaches through letters, objects, staged encounters, and conversation, presenting the history of Western philosophy as a continuing effort to question appearances and inherited assumptions.

First appears in chapter 23

Hilde's mother, who lives with her at Bjerkely while Albert Knag is posted abroad. She prepares for her husband's return and gives Hilde room to absorb the extraordinary birthday manuscript he has sent.

First appears in chapter 33

A boy who attends Sophie's garden party with Joanna. His exuberant behavior with Joanna adds to the breakdown of ordinary adult decorum as the gathering becomes increasingly chaotic.