#19 – Know who you’re dealing with — do not offend the wrong person
“There are many different kids of people in the world, and you can never assume that everyone will react to your strategies in the same way. Deceive or outmaneuver some people and they will spend the rest of their lives seeking revenge. They are wolves in lambs’ clothing. Choose your victims and opponents carefully, then — never offend or deceive the wrong person.”
Source: Robert Greene’s “The 48 Laws Of Power.”