Dancing on the Volcano's Rim

Indeed, it is a memorable subject for consideration, with what unconcern and gaiety mankind pricks on along the Valley of the Shadow of Death. The whole way is one wilderness of snares, and the end of it, for those who fear the last pinch, is irrevocable ruin. And yet we go spinning through it all, like a party for the Derby. Perhaps the reader remembers one of the humorous devices of the deified Caligula: how he encouraged a vast concourse of holiday-makers on to his bridge over Baiae bay; and when they were in the height of their enjoyment, turned loose the Praetorian guards among the company, and had them tossed into the sea. This is no bad miniature of the dealings of nature with the transitory race of man. Only, what a chequered picnic we have of it, even while it lasts! and into what great waters, not to be crossed by any swimmer, God's pale Praetorian throws us over in the end! --Robert Louis Stevenson, "Aes Triplex"