Potato Sermon Every day I walk past my potatoes. I go by a little earlier or a little later.   Their humble leaf helps me think of lack of hubris while I ponder hidden tubers.   And down below the humus awaits the Harvest Festival. Ivan Head     A Prior Potato Sermon   The churchyard wall by the copse divides two crops into potatoes one side corpses the other.   One day there will be a clearer distinction between the two, a difference in lumpish density as Aquinas put it long before the potato reached Europe.   One will…