“It shall be as you say, your Imperial Majesty,” I answered, as it seemed unwise to give any different response.

Then he could not shoo me away fast enough. I was dragged, breakneck, back into the center of Carlsbad on a troika and re-united with my driver. Thence we proceeded to Hanover with only a brief detour to Leipzig, where all of my affairs are in a state of upheaval. Publication of Monadology has gone forward with only the normal amount of bickering with printers. Now that the war is over, Prince Eugene, the Duke of Marlborough’s valiant brother-in-arms, has taken an interest in Philosophy-which may or may not be an affectation. At any rate, he asked me to write down some of my ideas in a form that would be readable by people like him, who are literate, and intelligent, but do not make a professional study of Philosophy (and he is not the first. It would be interesting to ask one of these people why they assume it is possible to do this in the case of philosophy when they would never dream of asking Sir Isaac to write a version of Principia Mathematica with all of the mathematicks taken out). I have done the best I can to satisfy Prince Eugene. The tract is called Principles of Nature and of Grace, and its printing moves forward too, attended by a completely different set of distractions and controversies. But most of my time in Leipzig was spent, not on the publication of new work, but on the most tedious re-hashing of what I was doing forty years ago. Since you are in the bosom of the Royal Society, Daniel, you know what I refer to: the dispute with Sir Isaac as to who first invented the calculus. Letters have been flying back and forth like kites over a knacker’s yard ever since this became warm about six years ago, but it has been hot during the last two years, or ever since Sir Isaac began to convene “committees” and, God help us, “tribunals” at the Royal Society to render an impartial verdict. In short, by the time you read this, anything I might say concerning the Priority Dispute will be out of date, and you can get better intelligence by stopping anyone in the hallway and asking him for the latest.

By this point, Daniel, you are no doubt frantic with anxiety that I’m about to ask for your help in my war with Sir Isaac. Indeed, I confess I might have stooped so low, if Peter had not laid more pressing burdens upon me. As it happened, during the ride from Leipzig to Hanover I scarcely thought of Newton at all, save in one, purely practical sense: I could not imagine how I was going to get a letter to you at Crane Court without someone-possibly even Newton himself-recognizing my handwriting, and tearing it open.

Upon my arrival, however, I learned that Providence had shed some favor on me. My old friend (and yours, I believe) Eliza, the Duchess of Arcachon-Qwghlm, had come to town incognito.

Several members of the English nobility have gravitated to Hanover in the last year or two, as the war ground to a halt like an unwound clock, and it became evident that England would not suffer the Pretender to succeed Queen Anne. These English courtiers-all Whigs, of course-have probably earned the scorn of London society for turning their backs on a reigning Queen and leaving their country to curry favor with Sophie and her son. And perhaps some of them deserve it. But they have performed invaluable services, not only to the Hanoverians but to England, by forging contacts, teaching their future rulers a few words of English, and coaxing them to think concretely about preparations. If the change of reign goes smoothly, you may thank them for it. They will be sure to compensate themselves handsomely!

This is not the place to tell the nature of Eliza’s work in Hanover. Suffice it to say that her incognito is not just a histrionic fashion statement. She is not seen in Court. Almost no one knows she is here. She corresponds frequently with a certain distinguished Englishman who lived in Frankfort until recently, when he moved to Antwerp. And if she receives letters from the Pretender’s court in St.-Germain, it is not because she is in league with the Jacobites, but because she makes it her business to know every detail of the plots that are being laid there, to bring a Catholic king back to the Court of St. James. At any rate, the Duchess’s network of couriers is peerless and more than equal to the task of getting a letter from my hands to yours without it falling into the grasping claws, and passing beneath the bulging eyeballs, of Sir Isaac.

So, to the matter at hand: Peter’s three new warships are supposedly being completed at Orney’s ship-yard in a place called Rotherhithe, across the river from Limehouse, adjacent to the Shepherd and Dog Stairs, off Lavender Street. I hope that these names mean something to you!

If you are feeling up to a minor adventure, and if it would in no way interfere with whatever it is you are supposed to be doing for Princess Caroline, I should be indebted if you were to (1) learn from Mr. Orney when those ships are expected to sail for St. Petersburg, and (2) before they do so, freight them, as much as you can, with goods that might be of use, or at least of interest, to aspiring Russian Natural Philosophers, viz. thermometers, scales, lenses, toad’s-eyes, unicorn’s-gallbladders, Philosopher’s Stone, and the like; and (3) for God’s sake give the Tsar something to show for our work of the last fifteen years. If you can arrange for your note-cards to be shipped over from Boston in time, that is ideal. Short of that, any tangible evidence that you have been doing something at the Massachusetts Bay Institute of Technologickal Arts, may help to keep your humble and obedient servant from being broken on a wheel before the Russian Academy of Sciences, as an example to Scientists who draw stipends without yielding Science.

Yours, amp; c.,

Leibniz

Daniel got dressed. Much of his clothing had been blown up. In the two weeks since, however, Mrs. Arlanc had brokered the procurement of new garments. Daniel had been too debilitated to meddle. Consequently he was now closer to being a la mode than at any time in his life.

The last fifty years had not witnessed anything like the thorough-going revolution in gentlemen’s attire that had come about after the Plague and the Fire, when doublets, and other medieval vestiges, had finally vanished from the world by decree of Charles II. The garments stacked on the table next to Daniel’s bed bore the same names, and covered more or less the same bits of the humane anatomy, as the ones that had become fashionable at that time: hose up to the knee, breeches, a linen shirt, a long, skirted, many-buttoned vest, and over that a long-sleeved coat with even more buttons. They had even managed to scare up a periwig for him. The old Louis XIV lion-mane wig was no longer in use; the new ones were narrower and more compact. A bizarre affectation seemed to have taken hold, of dusting them with white powder. The one Mrs. Arlanc had put on the block-head here was as plain as could be, and simply made it look as if Daniel had a luxuriant head of snow-white hair, tied back in a queue. Daniel put it on, if only to keep his bald head warm. He had avoided freezing to death in this room only by wearing a woolen night-cap twenty-four hours a day.

While he was putting on these clothes, which took a long time-his fingers were stiff with age and chill, and the buttons never ended-he glanced through the basket Mrs. Arlanc thought of as a repository, and Daniel thought of as a dustbin, for his mail. There were five separate communications from Mr. Threader, two from Roger Comstock, one from the Earl of Lostwithiel, and diverse cards and notes from Fellows who had stopped by to look in on him, and been turned away by the adamant Mrs. Arlanc. His London relations, some of whom he had never even heard of (these were children of the late Sterling and of Raleigh, and of William Ham) had written, somewhat perfunctorily. As promised, Monadology was in there from Leibniz, and there was a 2nd edition of Isaac’s Principia Mathematica, its leather cover still reeking of the tannery. This had been dropped off, not by Isaac-indeed, there was nothing in the basket from him-but by one of his young acolytes, who had thoughtfully piled on top of it a recent issue of Journal Literaire, a Royal Society document from last year called Commercium Epistolicum, and a litter of broadsheets and pamphlets in diverse languages, all tied together with narrow black ribbon. Daniel recognized these as several years’ worth of attacks and counter-attacks in the calculus dispute. Apparently he was expected to familiarize himself with them-which could only mean that they intended to call him before their tribunal to render testimony.