Perfect incomplet

This Romanian book is by Rafael Iacob. Stores list it as fiction. The blurb is a short note by Ancuta Bucur, his old primary school teacher. She taught him at the Onisifor Ghibu school.

She recalls a boy who stood out from the rest. His skin color and curly hair set him apart, and so did his gaze. They lived close by and often walked part of the way home together. On those walks he opened up and asked many questions.

She calls him bright and rebellious. He was always hungry for new and thrilling things. He had many gifts, but his goals drifted toward paths she knew little about. School moved too slowly for him, so he never showed his talents there. At Christmas he sang carols at her home, and she still remembers his "Silent Night." Teacher and pupil stayed in touch over the years. She praises his real kindness toward others and regrets that few people saw it.