One day, when the brilliant Chinese Cha'n master Chao-chou was sweeping the court of the monastery, a man asked him:
-Ch'an monastery supposed to be clean and pure. Why is there dust to sweep?
The sky is not untouched by the rain. The bottom part gets soaked routinely.
Reminds me of a joke my biker friend told me. Said he ran into one of his old lady's ex-boyfriends who asked him how he liked her since he had worn her out. He said she was great, except for the first inch or two.