This quote essentially means that whether the subject is good (a saint) or bad (a sinner), if there’s an element of foolishness or absurdity that is romanticized or glamorized, it must be depicted or highlighted. Alexander Pope is expressing his commitment to exposing the truth, regardless of who or what it pertains to. He believes in portraying reality as it is, not as people might want to see it.
The "charmer" here can be seen as anyone who holds sway or influence over others, be it through charisma, power, or position. The "romantic" folly refers to the tendency of people to idealize or romanticize certain actions, behaviors, or characteristics that are, in essence, foolish or nonsensical. Pope’s assertion that he "must paint it" signifies his role as a writer/poet to present the truth, warts and all, to his audience.
In today’s world, this idea is incredibly relevant. Society often romanticizes celebrities, politicians, or public figures, overlooking their flaws and mistakes due to their charm or influence. However, it’s essential to see these figures for what they truly are, acknowledging both their strengths and their weaknesses. This can prevent us from falling into the trap of blind admiration or, worse, imitation of their follies.
In terms of personal development, this quote serves as a reminder to remain grounded in reality. It’s easy to romanticize certain aspects of our lives or ourselves, but it’s important to recognize our own follies and work on improving them. We shouldn’t allow charm or charisma to blind us to our own shortcomings. Instead, we should strive for self-awareness and personal growth, acknowledging our flaws and making a conscious effort to better ourselves.