“Although we are typically in the habit of perceiving our world in terms of solid shapes and forms,  Taoism teaches that we can train ourselves to perceive in other ways, and a good place to start is with our own human body. Though we may now experience our body as being rather solid, at a molecular level it is comprised mostly of water–a very fluid substance! And at an atomic level, it is 99.99% space–a vast (and infinitely intelligent) emptiness.” Online source …