Schopenhauer on opera

"grand opera, by more and more deadening our musical receptivity through its three-hours duration and at the same time putting our patience to the test through the snail's pace of what is usually a very trite action, is in itself intrinsically and essentially boring; which failing can be overcome only by the excessive excellence of an individual achievement: that is why in this genre only the masterpieces are enjoyable and everything mediocre is unendurable." -- On Aesthetics by Arthur Schopenhauer