S is for Sanity.  I use sanity  as a symbol  for some personal  sense of rational thought which might be expanded to include a common sense.  No normal or abnormal, but simply practical,  useful.  Like a building block. The ultimate component.

A reminder to find a simple solution.

My Sanity Series has to do with that,  holding on to a simply useful state of mind. And therefore a place of personal peace.
It is the part of what I do that I consider my true Art. I have not shared most of it.