which theme can be identified in the following lines from santa claus stops by (pgs. 207-209)?

"Filthy, silence doesent mean / you have run out of things to say / only that we are trying not to say them."

The theme of unspoken emotions or thoughts could be identified in the lines "Filthy, silence doesn't mean / you have run out of things to say / only that we are trying not to say them."