The Summer Book is a series vignettes chronicling the day to day life of Grandmother and Sophia (and sometimes Papa). They have small adventures on their island in the Gulf of Finland. Grandmother is coming to the end of her life while Sophia is just six but dealing with the loss of her mother. Jansson wrote it just after her mother died, basing the characters on her own mother and niece. There is a pall of melancholy over the book. Jansson creates an excellent example of show-don't-tell in The Summer Book. In each vignette, we are shown how the characters feel through the things they do or say. We aren't told Grandmother is doing something to help Sophia feel better or that Sophia reacts the way she does because she is afraid of losing someone else. It's in everything they do. I don't know how a story about a tent could bring me close to tears but Jansson did it. There is plenty to laugh about as well.
Jansson wrote children's stories as well and this has that feel to it even though in is a book for adults. In a well written children's book, the story is simple but the message is a complex one. It is the same for The Summer Book. She knew children well enough to create a believable one in Sophia. Kids say the most startlingly true things at times; they express their anger and fear in surprising ways as well. They are complicated little creatures.
Here is an example of some of the things Sophia says:
“It’s funny about love,” Sophia said. “The more you love someone, the less he likes you back.”The Summer Book is the kind of book you read when you are some place quiet where you can ponder every sentence in peace.
“That’s very true,” Grandmother observed. “And so what do you do?”
“You go on loving,” said Sophia threateningly. “You love harder and harder.”
Her grandmother sighed and said nothing.