The trade of 'yes, yes' words. Taking borrowed and lent essence.

This couplet describes people whose words are like a 'yes-yes' business, full of insincere agreement. They speak with borrowed essence, meaning their thoughts aren't their own, or their agreement isn't heartfelt. It's a critique of flattery and saying what others want to hear, rather than expressing genuine opinions. Such individuals often lack originality and conviction, merely echoing others or offering hollow affirmations to navigate social situations or achieve personal gains. Their language is not authentic; it's a collection of borrowed sentiments, lacking true depth or personal belief. It highlights the superficiality of such interactions.