" In this sense many apparently immoral beliefs are actually factual errors based on incorrect causal theories. Today we hold that it is immoral to burn women as witches, but the reason our European ancestors in the Middle Ages strapped women on a pyre and torched them was because they believed that witches caused crop failures, weather anomalies, diseases, and various other maladies and misfortunes. Now that we have a scientific understanding of agriculture, climate, disease, and other causal vectors—including the role of chance—the witch theory of causality has fallen into disuse; what was a seemingly moral matter was actually a factual mistake. "

― Michael Shermer , The Moral Arc: How Science and Reason Lead Humanity toward Truth, Justice, and Freedom