The principal causes of ingratitude are pride and self-conceit, avarice, envy, etc. It is a familiar exclamation, “It is true he did this or that for me, but it came so late, and it was so little, I had even as good have been without it—if he had not given it to me, he must have given it to somebody else—it was nothing out of his pocket.” Nay, we are so ungrateful, that he that gives us all we have, if he leaves any thing to himself, we reckon that he does us an injury.