Unsuspectedly from the bottom of every fountain of pleasure, as the old poet said, something bitter rises up: a touch of nausea, a falling dead of the delight, a whiff of melancholy, things that sound a knell, for fugitive as they may be, they bring a feeling of coming from a deeper region and often have an appalling convincingness. The buzz of life ceases at their touch as a piano-string stops sounding when the damper falls upon it.