It would have been better to come back at the same hour,” said the fox. “If, for example, you came at four o’clock in the afternoon, then at three o’clock I shall begin to be happy. I shall feel happier and happier as the hour advances. At four o’clock, I shall already be worrying and jumping about. I shall show you how happy I am! But if you come at just any time, I shall never know at what hour my heart is to be ready to greet you . . . One must observe the proper rites . . .

Autore: Antoine de Saint-Exupéry