A student was visiting his teacher at the temple when he learned that a thief had made off with the teacher's watering bucket the night before.
"Aren't you upset at the thief?" asked the student. "No, for he is not a thief," replied the teacher. "But he took your watering bucket," he persisted.
The master paused for a bit. "One cannot steal knowledge. Wet feet and an empty bucket makes a far better teacher of Zen than I or anyone else at this temple."