Amrico-the protagonist of this book. An Italian boy who just entered the fourth grade of primary school was born in an intellectual family. Because of his father's guidance and education, he is pure, kind, hardworking, sincere and friendly.

Caron-Amrico's classmate and good friend. A tall boy, who knows right from wrong, dares to fight evil battles and often protects weak classmates.

Delossi-excellent in character and learning, served as a prefect. He is kind, lively and lovely.

Polly, the blacksmith's son, is thin and studies hard. I was beaten and scolded by my alcoholic father, but I just swallowed it and didn't want my classmates to know. After winning a medal through hard work, it also changed my father.

Coletti, the son of a woodcutter, urinates and does housework for his parents. Study hard, even when I am working, I am doing my homework. He is lively and polite.

The inspiring exhortation articles written by parents in their diaries feel very good, and this method can also be used when raising children.