But I failed to understand how M. de Charlus could, in the space of a few hours, have forgotten the invitation—so curt but apparently so intentional, so premeditated—which he had addressed to me that same morning, or why he called a "capital idea" on my grandmother's part an idea that had been entirely his own. With a scruple of accuracy which I retained until I had reached the age at which I realised that it is not by asking him questions that one learns the truth of what another man has had in his mind, and that the risk of a misunderstanding which will probably pass unobserved is less than that which may come from a purblind insistence: "But, sir," I reminded him, "you remember, surely, that it was you who asked me if we would come in this evening?" Not a sound, not a movement betrayed that M. de Charlus had so much as heard my question.