Read it through once

Joan was as sweetly self-possessed and tranquil before this grim tribunal, with its robed celebrities, its solemn state and imposing ceremonials, as if she were but a spectator and not herself on trial. She sat there, solitary on her bench, untroubled, and disconcerted the science of the sages with her sublime ignorance—an ignorance which was a fortress; arts, wiles, the learning drawn from books, and all like missiles rebounded from its unconscious masonry and fell to the ground harmless; they could not dislodge the garrison which was within—Joan’s serene great heart and spirit, the guards and keepers of her mission.