Who wrote old sins have long shadows?

The phrase "old sins have long shadows" is not attributed to a specific author. It's a proverb, meaning that past mistakes or misdeeds can continue to have a lasting impact on one's life, even long after they've occurred.

While there's no known origin for the exact phrase, similar sentiments are found in various cultures and literature throughout history.

Here are some examples:

* "The sins of the fathers are visited upon the children." This is a quote from the Bible, specifically Exodus 20:5.

* "The past is never dead. It's not even past." This line from William Faulkner's novel "Requiem for a Nun" reflects the enduring nature of the past.

So, while no single author "wrote" the proverb, it captures a universal truth about the lingering effects of past actions.