In this quote, Pierre Corneille is recommending that a person who is known to be a liar will typically use excessive and extravagant language to attempt and encourage others of their falsehoods. By using the word "lavish," Corneille is implying that the phony is not only utilizing a great deal of oaths, but also utilizing them in a flashy and exaggerated way. This might be viewed as a method to distract or control others into believing their lies. Corneille's declaration likewise indicates that a phony may depend on oaths and promises to attempt and conceal their deceitful habits. In general, this quote highlights the misleading nature of a phony and their tendency to use grand language to trick others.
"I never yet feared those men who set a place apart in the middle of their cities where they gather to cheat one another and swear oaths which they break"
"Priests, she insisted, could not sin. It was a thing impossible. Everything that they did, and wished, was of course right. She hoped I would see the reasonableness and duty of the oaths I was to take, and be faithful to them"
"Language cannot describe the scene that followed; the shouts, oaths, frantic gestures, taunts, replies, and little fights; and therefore I shall not attempt it"