But there is a larger law which perhaps comprehends these facts. It is this. The rapidity with which ideas grow old in our memories is in a direct ratio to the squares of their importance. Their apparent age runs up miraculously, like the value of diamonds, as they increase in magnitude. A great calamity, for instance, is as old as the trilobites an hour after it has happened. It stains backward through all the leaves we have turned over in the book of life, before its blot of tears or of blood is dry on the page we are turning. For this we seem to have lived; it was foreshadowed in dreams that we leaped out of in the cold sweat of terror; in the “dissolving views” of dark day-visions; all omens pointed to it; all paths led to it. After the tossing half-forgetfulness of the first sleep that follows such an event, it comes upon us afresh, as a surprise, at waking; in a few moments it is old again,—old as eternity. [I wish I had not said all this then and there. I might have known better. The pale schoolmistress, in her mourning dress, was looking at me, as I noticed, with a wild sort of expression. All at once the blood dropped out of her cheeks as the mercury drops from a broken barometer-tube, and she melted away from her seat like an image of snow; a slung-shot could not have brought her down better. God forgive me! After this little episode, I continued, to some few that remained balancing teaspoons on the edges of cups, twirling knives, or tilting upon the hind legs of their chairs until their heads reached the wall, where they left gratuitous advertisements of various popular cosmetics.] When a person is suddenly thrust into any strange, new position of trial, he finds the place fits him as if he had been measured for it. He has committed a great crime, for instance, and is sent to the State Prison. The traditions, prescriptions, limitations, privileges, all the sharp conditions of his new life, stamp themselves upon his consciousness as the signet on soft wax;—a single pressure is enough. Let me strengthen the image a little. Did you ever happen to see that most soft-spoken and velvet-handed steam-engine at the Mint? The smooth piston slides backward and forward as a lady might slip her delicate finger in and out of a ring. The engine lays one of _its_ fingers calmly, but firmly, upon a bit of metal; it is a coin now, and will remember that touch, and tell a new race about it, when the date upon it is crusted over with twenty centuries. So it is that a great silent-moving misery puts a new stamp on us in an hour or a moment,—as sharp an impression as if it had taken half a lifetime to engrave it.