Murata and Chittick write:"There is nothing evil about clay. It is a good substance for makign pots (if you are a potter) or bodily things (if you are a god). Clay has its drawbacks. It is dark and dense, so when you pour liquid light into the pot, the light is hidden, and some people might imagine the pot is empty. But without pots you would have no containers for the light. Clay is not devious and deceptive, it is simply dull".