The phenomenon moon-in-the-water is likened to human experience. The water is the subject, and the moon the object. When there is no water, there is no moon-in-the-water, and likewise when there is no moon. But when the moon rises the water does not wait to receive its image, and when even the tiniest drop of water is poured out the moon does not wait to cast its reflection. For the moon does not intend to cast its reflection, and the water does not receive its image on purpose. The event is caused as much by the water as by the moon, and as the water manifests the brightness of the moon, the moon manifests the clarity of the water. Another poem in the Zenrin Kushu says: Trees show the bodily form of the wind; Waves give vital energy to the moon.

— The Way of Zen by Alan Watts