Well, that is the first way, then, in which you will employ your intellect well; and the simple observance of this plain rule of political economy will effect a noble revolution in your architecture, such as you cannot at present so much as conceive. Then the second way in which we are to guard against waste is by setting our men to the easiest, and therefore the quickest, work which will answer the purpose. Marble, for instance, lasts quite as long as granite, and is much softer to work; therefore, when you get hold of a good sculptor, give him marble to carve--not granite. That, you say, is obvious enough. Yes; but it is not so obvious how much of your workmen's time you waste annually in making them cut glass, after it has got hard, when you ought to make them mould it while it is soft. It is not so obvious how much expense you waste in cutting diamonds and rubies, which are the hardest things you can find, into shapes that mean nothing, when the same men might be cutting sandstone and freestone into shapes that meant something. It is not so obvious how much of the artists' time in Italy you waste, by forcing them to make wretched little pictures for you out of crumbs of stone glued together at enormous cost, when the tenth of the time would make good and noble pictures for you out of water-colour. I could go on giving you almost numberless instances of this great commercial mistake; but I should only weary and confuse you. I therefore commend also this head of our subject to your own meditation, and proceed to the last I named--the last I shall task your patience with to-night. You know we are now considering how to apply our genius; and we were to do it as economists, in three ways:-- To _various_ work; To _easy_ work; To _lasting_ work. This lasting of the work, then, is our final question. Many of you may, perhaps, remember that Michael Angelo was once commanded by Pietro di Medici to mould a statue out of snow, and that he obeyed the command.[7] I am glad, and we have all reason to be glad, that such a fancy ever came into the mind of the unworthy prince, and for this cause: that Pietro di Medici then gave, at the period of one great epoch of consummate power in the arts, the perfect, accurate; and intensest possible type of the greatest error which nations and princes can commit, respecting the power of genius entrusted to their guidance. You had there, observe, the strongest genius in the most perfect obedience; capable of iron independence, yet wholly submissive to the patron's will; at once the most highly accomplished and the most original, capable of doing as much as man could do, in any direction that man could ask. And its governour, and guide, and patron sets it to build a statue in snow--to put itself into the service of annihilation--to make a cloud of itself, and pass away from the earth. [7] See the noble passage on this tradition in "Casa Guidi Windows."