The Kizaemon Ido tea bowl
The Kizaemon Ido, among the most revered tea bowls in Japan and designated a National Treasure, was originally a cheap Korean rice bowl made by unknown potters for everyday use by poor people. Yanagi describes seeing it and finding it utterly ordinary, and argues that the early tea masters' genius lay in recognising the beauty of this commonplace object, not in commissioning a masterpiece.
