This is the Lantern of Truth. It illuminates everything you already know. Come, bask in its glow. It will show you no surprises. See your hands, smooth and pink and healthy. See your face, wise and beautiful. Everything is as you know it would be.
You need not see the old man across the way. Do not fret as he recoils in horror, his face collapsing into mingled disgust and pity. He is deluded. He is irrelevant. For you, in your light, are perfect. Leave him to his foolishness. You are unblemished, whole and untouched.
As far as you know.