‘Suppose someone asks me, “How is it when a person of great enlightenment returns to delusion?” I would simply say to him: If the great ocean knew it was full, the hundred rivers would flow backward.’ (Extensive Record, 513)
Which I take to mean: what ideas do you have about enlightenment and delusion? Rivers flow into the ocean, and the ocean accepts all the water; thus is the nature of things.
Shundo David Haye 