“Never argue with stupid people.
They will drag you down to their level
and beat you with experience.”

– Mark Twain

Variation: Don’t fight unethical people with unethical practices. You’re out of your league. They’ll beat you every time. Ex. Marco Rubio in 2016 Pres. election trying to match Trump’s insults with the size of his hands. I’ve tried fighting gossipers with gossip. Terrible choice.