A hen who had lost her sight, and was accustomed to scratching up the earth in search of food, although blind, still continued to scratch away most diligently. Of what use was it to the industrious fool? Another sharp-sighted hen who spared her tender feet never moved from her side, and enjoyed, without scratching, the fruit of the other’s labor. For as often as the blind hen scratched up a barley-corn, her watchful companion devoured it.
Fables, Gotthold Lessing, 1729 – 1781