Sin Cerity

"Sincerity and reality... don't make it the better. That which is real and hearty is often called sincere; whether it be in virtue or vice. Some persons are sincerely bad; others are sincerely good... But a being sincere, hearty and in good earnest, is no virtue, unless it be in a thing that is virtuous. A man may be sincere and hearty in joining a crew of pirates, or a gang of robbers. When the devils cried out, and besought Christ not to torment them, it was no mere pretense; they were very hearty in their desires not to be tormented: but this did not make their will or desires virtuous" (Jonathan Edwards, Freedom of the Will).