The Ginger Finger

The Ginger Finger writes; and, having writ,
Moves on: nor all thy piety nor wit
shall lure it back to cancel half a line,
nor all thy ridicule wash out a word of it...

And strange to tell, among that Earthen Lot 

Some could articulate, while others not: 

 And suddenly one more impatient cried— 

 "Who is the Potter, pray, and who the Pot?"

Not quite Omar Khayyam