 To be an error theorist about unicorns does not mean that every assertion involving the word “unicorn” is false. There would be no error, for example, in asserting “Unicorns do not exist,” “The ancient Greeks believed that unicorns lived in India,” or “My dog is not a unicorn.” What is distinctive about these three sentences is that one would not, in asserting them, be committing oneself to the existence of unicorns. (It would be rather troubling if this were not true of the first, in particular!) Similarly, the moral error theorist may allow that the following are true: “Moral wrongness does not exist,” “Augustine believed that stealing pears was wrong,” and “Stealing is not morally wrong.”