The train crossed the Elbe on a nearby ferry and pounded down the road for some hours until they reached Brandenburg, then stopped for the night at an inn on the Meißen-Berlin road. The next day they got a late start. Some fifty miles separated them from the Palace of Charlottenburg and the hospitality of its namesake, the Electress Sophie Charlotte. "Pray consider me at your disposal, your highness," said Leibniz. "The road is long, and I shall deem it a high honor to be of whatever assistance I may in making it seem shorter. We may pursue your mathematicks-lessons, which have been neglected during the illness of your late mother. We may discourse of theology, which is something you should tend to; for in the Court of Brandenburg-Prussia you’ll encounter not only Lutherans but Calvinists, Jesuits, Jansenists, even Orthodox, and you’ll need to keep your wits about you lest some silver-tongued zealot lead you astray. I have a blockflöte, and could attempt to give you a music-lesson. Or—"