Sophie's World

Sophie Amundsen is fourteen years old and lives in a house in Norway, near a wood. One day she comes home from school, opens the mailbox and finds an envelope with no stamp and no return address. Inside, a short note holds a single question: who are you? She stares at the paper, not knowing what to answer.

The next day another note arrives, with an even bigger question: where does the world come from? The girl, who had never thought about this seriously, starts to find it strange that such basic things go unanswered. It is through these two questions that the book enters philosophy.

Little by little, letters full of ideas begin to arrive, always left in secret. Whoever is writing seems to know Sophie, her house and even the questions she is going to ask. The mystery of the sender is what keeps the story gripping.

The sender is Alberto Knox, a middle-aged man, odd and kind, who introduces himself as a philosopher. He sends a correspondence course, then starts meeting the girl in person, in an old cabin near a lake, called the major's cabin. His dog, Hermes, carries the letters to Sophie.

Alberto works like a teacher who speaks plainly, without jargon, and gives everyday examples. When he explains a thinker's ideas, he uses Sophie's room, the garden, a ball, a cup. The fun part is that each lesson comes with a new piece of the mystery.

The relationship between the two is affectionate and a little mischievous. He insists that she think for herself and encourages her to stay amazed by the world. Learning, here, means recovering the ability to ask questions, the way a child does.

At the same time, Sophie starts receiving strange postcards from Lebanon, addressed to another girl named Hilde Møller Knag. They are sent by her father, a major serving in a peacekeeping force. The postcards show up in Sophie's mailbox with no explanation, carrying messages that grow more and more intriguing.

Sophie tries to figure out why Hilde's mail ends up at her house. A post office mistake? A coincidence? Or something bigger? The doubts pile up, and she begins investigating who Hilde is, who owns the world behind those cards and what connection exists between the two of them.

It's a very simple suspense device, and it works as the glue of the narrative. While studying the philosophers, the main character also investigates her own existence, and the reader follows both trails at once.