That is why the better part of our memory exists outside ourself, in a blatter of rain, in the smell of an unaired room or of the first crackling brushwood fire in a cold grate: wherever, in short, we happen upon what our mind, having no use for it, had rejected, the last treasure that the past has in store, the richest, that which when all our flow of tears seems to have dried at the source can make us weep again.