How we cite our quotes: Section.Part (if applicable).Paragraph
Quote #4
There is a sort of harmless liars […] who deal much in the marvellous. Their usual intention is to please and entertain; but as men are most delighted with what they conceive to be truth, these people mistake extremely the means of pleasing, and incur universal blame. Some indulgence, however, to lying or fiction is given in humorous stories; because it is there really agreeable and entertaining, and truth is not of any importance. (VIII.6)
Is lying always bad? What if someone makes things up to entertain us? There's nothing sinister about this, but Hume argues that knowing something is true makes it extra compelling. To find out that it's not the real deal may leave us feeling bummed out. Still, when it's a funny story and we're under no illusion that it's true, it's okay for fiction to take the place of fact.
Quote #5
Such a one has, besides, the frequent satisfaction of seeing knaves, with all their pretended cunning and abilities, betrayed by their own maxims; and while they purpose to cheat with moderation and secrecy, a tempting incident occurs, nature is frail, and they give into the snare; whence they can never extricate themselves, without a total loss of reputation, and the forfeiture of all future trust and confidence. (IX.II.11)
Though he wouldn't usually wish misfortune on anyone, Hume has to admit that seeing a devious scheme backfire carries a certain satisfaction. It's like when we're watching a movie and the baddie gets their just desserts. As the saying goes: "don't do the crime if you can't do the time."
Quote #6
But on the whole, it seems to me, that [...] when a man is called virtuous, or is denominated a man of virtue, we chiefly regard his social qualities, which are, indeed, the most valuable. It is, at the same time, certain, that any remarkable defect in courage, temperance, economy, industry, understanding, dignity of mind, would bereave even a very good-natured, honest man of this honourable appellation. (AIV.2)
Getting into the topic of language, Hume notes that, when we call someone "virtuous," we're most often talking about their social values. This makes sense, since it's these that make a person useful and agreeable to society. But even when someone is honest and reliable, if they are totally lacking in stuff like courage and dignity then we can't call them virtuous—well, unless we're being ironic.