Can a tale be termed "good" when it is told by a shameless cad for entirely selfish and sinful reasons?

4. The pardoner acknowledged that even though he was not a moral man, he could tell a moral tale. This brings to mind the clic debate about whether a deed can be termed a "good action" if it is done for bad reasons, with selfish intentions. Can a tale be termed "good" when it is told by a shameless cad for entirely selfish and sinful reasons? Is this nonetheless a "moral tale"?