The metropolitan of Rostof, called the holy Demetrius, ob. 1709, was likewise a very productive theological writer. He was considered by his contemporaries as a true pattern of Christianity; and was equally distinguished for his learning. The metropolitan Stephen Javorsky, ob. 1722, was celebrated for his eloquence in the pulpit. Gabriel Bushinsky, bishop of Rjazan and Murom, ob. 1731, was not only a theological writer, but translated also works on history. A remarkable example in this period, is Elias Kopiyevsky,[19] ob. 1701, who studied theology in Holland, and became a protestant, and afterwards a pastor at Amsterdam. He aided zealously in Peter's great work of translations. Several historical and philological works translated by him, were published by Tessing. Luther's Catechism was translated about the same time by the pastor Glück of Livonia, who had been made a prisoner by the Russians and carried to Moscow. It was in his house that Catharine, the future empress of Russia, was brought up.[20] Among the secular writers of this period, prince Antiochus Kantemir, ob. 1745, must above all be mentioned. Of Greek extraction and born in Constantinople, with all the advantages of an accomplished education, and in full possession of several highly cultivated languages, he nevertheless chose the Russian idiom for his poetical productions. These are mostly satires, and evidently bear the stamp of a thorough knowledge of the classics. Besides these he wrote on different subjects of natural philosophy; and translated a selection from the Epistles of Horace, and Fontenelle's work on the plurality of worlds. About the same time, Leont. Magnitzky wrote the first Russian Arithmetic with Arabic numerals.