A good word for me to take to heart, via dukesewell:
But flippancy is the best of all. In the first place it is very economical. Only a clever human can make a real Joke about virtue, or indeed about anything else; any of them can be trained to talk as if virtue were funny.
Among flippant people the Joke is always assumed to have been made. No one actually makes it; but every serious subject is discussed in a manner which implies that they have already found a ridiculous side to it.
If prolonged, the habit of Flippancy builds up around a man the finest armour plating against the Enemy that I know, and it is quite free from the dangers inherent in the other sources of laughter. It is a thousand miles away from joy; it deadens, instead of sharpening, the intellect; and it excites no affection between those who practise it.
—Senior demon Screwtape, from C.S. Lewis' The Screwtape Letters