 There are five [spiritual] senses besides these five [physical] senses  The former are like red gold and the latter like copper.  In the marketplace where the expert connoisseurs are busy  How should the copper and golden senses be priced the same?  The physical senses’ nutriment is murky and tenebrous;  The spiritual sense sups and dines on the sun (Nicholson, II: 49–51)