In this limitless world our throat is like a swinging door, there is no I. When your mind is pure and calm enough there is nothing, just a swinging door. Our usual understanding is dualistic but actually it one and the same, there is no time and space. This is the true experience of life through Zen practice.
“The blue mountain is the father of the white cloud. The white cloud is the son of the blue mountain. All day long they depend on each other, without being dependent on each other. The white cloud is always the white cloud. The blue mountain is always the blue mountain.”~Zen Master Tozanby