3. "Let him learn Arithmetic, Mathematics, Artillery,--Economy to the very bottom." And, in short, useful knowledge generally; useless ditto not at all. "History in particular;--Ancient History only slightly (NUR UBERHIN);--but the History of the last hundred and fifty Years to the exactest pitch. The JUS NATURALE and JUS GENTIUM," by way of hand-lamp to History, "he must be completely master of; as also of Geography, whatever is remarkable in each Country. And in Histories, most especially the History of the house of Brandenburg; where he will find domestic examples, which are always of more force than foreign. And along with Prussian History, chiefly that of the Countries which have been connected with it, as England, Brunswick, Hessen and the others. And in reading of wise History-books there must be considerations made (_sollen beym Lesen kluger Historiarum Betrachtungen gemacht werden_) upon the causes of the events."--Surely, O King! 4. "With increasing years, you will more and more, to a most especial degree, go upon Fortification,"--mark you!--"the Formation of a Camp, and the other War-Sciences; that the Prince may, from youth upwards, be trained to act as Officer and General, and to seek all his glory in the soldier profession." This is whither it must all tend. You, Finkenstein and Kalkstein, "have both of you, in the highest measure, to make it your care to infuse into my Son [EINZUPRAGEN, stamp into him] a true love for the Soldier business, and to impress on him that, as there is nothing in the world which can bring a Prince renown and honor like the sword, so he would be a despised creature before all men, if he did not love it, and seek his sole glory (DIE EINZIGE GLORIA) therein." [Preuss, i. 11-14 (of date 13th August, 1718).] Which is an extreme statement of the case; showing how much we have it at heart. These are the chief Friedrich-Wilhelm traits; the rest of the document corresponds in general to what the late Majesty had written for Friedrich Wilhelm himself on the like occasion. [Stenzel, iii. 572.] Ruthless contempt of Useless Knowledge; and passionate insight into the distinction between Useful and Useless, especially into the worth of Soldiering as a royal accomplishment, are the chief peculiarities here. In which latter point too Friedrich Wilhelm, himself the most pacific of men, unless you pulled the whiskers of him, or broke into his goods and chattels, knew very well what he was meaning,--much better than we of the "Peace Society" and "Philanthropic Movement" could imagine at first sight! It is a thing he, for his part, is very decided upon.