Water is made of oxygen and hydrogen. What is a oxygen atom made of? Not oxygen, but of smaller particles, like protons and electrons. And what are they made of? Mostly space. In a lecture I just watched, Brian Cox gave a figure for how empty an atom is. It is 99.9999999999999% space. And what is that remaining 0.000000000000001% non-space made of? Nothing that we would call hard, or material. It is some wavicle, some quantum superposition, some intangible force. Maybe it is simply information. We actually don’t know what matter is at the bottom, but we do know it is fungible into energy and information. So in a very real sense, the drops of water splashed up by waves thundering on the beach before me, and the sand churned up from the beach, are just patterns of the immaterial. Water and sand are real patterns just as the waves are real patterns; but they are patterns of a kind of nothingness.