What this quote means

Boileau denounces vanity and mediocrity. The fool, blinded by pride, always seeks someone to validate his foolishness, and he finds it among those who are even more foolish. It is a satire of flattery and blind admiration. This maxim invites us to humility and vigilance against self-interested praise.

How to apply it daily

Before accepting a compliment, ask yourself if the person is sincere or flattering you. Cultivate self-evaluation.