"A messenger to him, to Karl Theodor and him," thinks Friedrich: "a messenger instantly; and who?" For that clearly is the first thing. And a delicate thing it is; requiring to be done in profoundest secrecy, by hint and innuendo rather than speech; by somebody in a cloak of darkness, who is of adroit quality, and was never heard of in diplomatic circles before, not to be suspected of having business of mine on hand. Friedrich bethinks him that in a late visit to Weimar, he had noticed, for his fine qualities, a young gentleman named Gortz; Eustace von Gortz, [Preuss, iv. 92 n. &c.] late Tutor to the young Duke (Karl August, whom readers know as Goethe's friend): a wise, firm, adroit-looking young gentleman; who was farther interesting as Brother to Lieutenant-General von Gortz, a respectable soldier of Friedrich's. Ex-Tutor at Weimar, we say, and idle for the moment; hanging about Court there, till he should find a new function. Of this Ex-Tutor Friedrich bethinks him; and in the course of that same day,--for there is no delay,--Friedrich, who is at Berlin, beckons General Gortz to come over to him from Potsdam instantly. "Hither this evening; and in all privacy meet me in the Palace at such an hour" (hour of midnight or thereby); which of course Gortz, duly invisible to mankind, does. Friedrich explains: An errand to Munchen; perfectly secret, for the moment, and requiring great delicacy and address; perhaps not without risk, a timorous man might say: will your Brother go for me, think you? Gortz thinks he will. "Here is his Instruction, if so," adds the King, handing him an Autograph of the necessary outline of procedure,--not signed, nor with any credential, or even specific address, lest accident happen. "Adieu then, Herr General-Lieutenant; rule is, shoes of swiftness, cloak of darkness: adieu!" And Gortz Senior is off on the instant, careering towards Weimar, where he finds Gortz Junior, and makes known his errand. Gortz Junior stares in the natural astonishment; but, after some intense brief deliberation, becomes affirmative, and in a minimum of time is ready and on the road.