Parable of the Invisible Gardener
The Parable of the Invisible Gardener was first introduced by philosopher John Wisdom in his essay "Gods," published in the Proceedings of the Aristotelian Society (1944–45). Wisdom’s version featured two people who return to a garden and argue whether a gardener is responsible for its state, although no one is ever seen.
Source: Wikipedia — Parable of the Invisible Gardener (CC BY-SA 4.0)