Two Insults.

From my favorite Pendergast chronicles:
//Ridder’s eyes glittered like mica. “You’ve disturbed our lunch and agitated our guest. Isn’t there something you ought to say to him before you leave?”
“I don’t believe so.” Pendergast seemed to consider a moment. “Unless, perhaps, it is a quotation from Einstein: ‘The only thing more dangerous than ignorance is arrogance.’ I would suggest to Dr. Chauncy that in combination, the two qualities are even more alarming.”//
//”I can see that an insufficient, or perhaps even defective, socialization process has led you to believe that four-letter words add power to language.”//