‘Can you explain to me why, when we defecate, we often examine our excrement?’ Aesop explained: ‘In olden days there was a king’s son who, because of his life of luxury, spent most of his time sitting and shitting. Once he remained seated thus so long that, having forgotten what he was doing, he shat his own common sense. From that day forward, men shit hunched over, being careful not to crap away their own common sense. But don’t you worry: you can’t shit something you don’t possess!’
Anonymous, The Aesop Romance, quoted in Umberto Eco, On Ugliness, p134.