Truth is light

Origin and Meaning

In grammar school, Montalbano’s religion teacher was an old priest who taught that truth is light. The brief recollection gives the saying a simple, declarative force: truth is figured as something that illuminates. The book does not elaborate a formal doctrine around it; instead, the maxim acquires meaning through Montalbano’s remembered response and its return in a later scene.

The Schoolboy’s Joke

Montalbano had been an inattentive, mischievous pupil who sat in the last row. Taking the priest’s metaphor literally, he announced, "So that must mean that if everyone in the family tells the truth, they save on the electric bill." The joke turns an elevated moral statement into household arithmetic, and its irreverence got him kicked out of the classroom. The episode establishes his youthful resistance to solemn instruction without making the maxim disappear from his memory.

Return at a Moment of Insight

More than thirty years later, the saying comes back while Montalbano is awake at four in the morning with persistent pain at the back of his head. He rubs salve on his nape and wraps it in gauze; the dressing is tight enough to make it difficult to move his head. Looking at himself in the bathroom mirror, he experiences a blinding flash in his mind and feels like a comic-book character with X-ray vision, able to see inside things. The recalled maxim resonates with this image of sudden illumination, though the passage leaves the insight itself unstated.

Montalbano silently asks the old priest to forgive him for the classroom joke. The apology marks a change in how he receives the remembered lesson: the boy who reduced truth to a saving on the electric bill now encounters the phrase at a moment when seeing through appearances matters to him. The expression joins childhood memory, physical discomfort, and the sudden arrival of understanding without explaining more than the scene reveals.