I suspect – though I have no basis beyond anecdote – that art is a particularly effective way of inducing sentiments and attacking the affect heuristic. You don’t hear a lot about art on LW, but we probably should be thinking more about it, because art is powerful. Music moves people: think of military marches and national anthems, and also think of the humanistic impulse in the Ode to Joy. Music is not an epistemic statement, but acts at the more primitive level of emotion. You can deploy music to change yourself at the pre-rational level; personally, I find that something like “O Isis Und Osiris” from The Magic Flute can cut through fear and calm me, better than any conscious logical argument.

Poetry also seems relevant here – it’s verbal, but it’s a delivery system that works at the sub-rational level. I’m convinced that a large part of the appeal of religion is in poetic language that rings true. (It’s interesting what happens when scientific or rationalist ideas are expressed in poetic language – this is rarer, but equally powerful. Carl Sagan, Francois Jacob, Bertrand Russell.) The parable, the fantasy, and the poem can be more effective than the argument, because they can reach emotional heuristics that arguments cannot touch.

Imagine there's no heaven...