In my own time there have been inventions of this sort, transparent windows tubes for diffusing warmth equally through all parts of a building short-hand, which has been carried to such a perfection that a writer can keep pace with the most rapid speaker. But the inventing of such things is drudgery for the lowest slaves; philosophy lies deeper. It is not her office to teach men how to use their hands. The object of her lessons is to form the soul.