One day Soshi was walking on the bank of a river with a friend. "How delightfully the fishes are enjoying themselves in the water," exclaimed Soshi. His friend spoke to him thus, "You are not a fish, how do you know that the fishes are enjoying themselves?" "You are not myself," returned Soshi, "how do you know that I do not know that the fishes are enjoying themselves?"
— Okakura Kakuzo, The Power of Mindful Learning by Ellen J. Langer