"Audacity," he exclaimed to himself, "as inspired, perhaps, as a Lavoisier's or an Ampere's, the audacity of a Vinteuil making experiment, discovering the secret laws that govern an unknown force, driving across a region unexplored towards the one possible goal the invisible team in which he has placed his trust and which he never may discern!" How charming the dialogue which Swann now heard between piano and violin, at the beginning of the last passage.