* Karma: The idea that actions have consequences, and violent or scheming behavior will ultimately lead to harm for the perpetrator. This resonates with a sense of justice and balance in the world.
* Hubris: The belief that those who plot and scheme often become so focused on their own machinations that they fail to foresee the consequences for themselves. Their own cunning can backfire, leading to their downfall.
* Justice: While Holmes is a detective and not a judge, his deductions often expose the true nature of the criminals, leading to their apprehension and punishment. This reinforces the idea that even the most cunning schemer will ultimately face the consequences of their actions.
Examples in the Holmes stories:
* The Hound of the Baskervilles: Sir Charles Baskerville, the victim, was ultimately killed by a trap intended for another.
* The Adventure of the Speckled Band: Dr. Grimesby Roylott, the villain, was killed by his own venomous snake, intended for his stepdaughter.
* A Scandal in Bohemia: Irene Adler, a woman who outsmarted Holmes, ultimately achieved her own goals, demonstrating that even a schemer can succeed if they are clever enough.
It's important to note:
While the quote you provided isn't directly from the stories, the sentiment it expresses is very much in line with the themes of justice, consequences, and the inherent dangers of violence and deceit found within the Sherlock Holmes canon.