Moon Reflected in a Pail of Water

Zen for Dummies: The point is not the moon reflected in a pail of water. The point is the moon reflected in every pail of water.

Zen for Idiots: There's not actually a moon in the pail.

Zen for Zen Masters: There's not actually a moon.

^{Hui Neng's Retort: (Kicks the bucket.)}