“Good sons, the Dharma is like water that washes away dirt. Just as the water in a well, a pond, a stream, a river, a ditch, a valley, or a great sea is equally effective in washing away all kinds of dirt, so Dharma water effectively washes away filth that afflicts living beings.
Good sons, the nature of water is the same, but a stream, a river, a well, a pond, a valley stream, a ditch, and a great sea are distinct and different from each other. The nature of the Dharma is like this. There is equal effectiveness and no differentiation in washing away the waste of afflictions, but the three teachings, the four fruits, and the two ways are not one and the same...” - Lotus Sutra