Charles F. Glassman said this quote

I acknowledge the challenge of believing in a supernatural divinity. After all, in the natural a rock is a rock; a desk is a desk; my skin is my skin. Or are they? That rock you pick up and feel on your skin and place on the desk is 99.9% empty space—between atoms; as is your skin and the desk. So, perhaps it is our perception of the natural or “real” world that needs tweaking, not the supernatural.