In this cultivated circle of Spinoza's contemporaries were two men who lived alternately at Hamburg and Amsterdam, David Coen de Lara and Dionysius Musaphia, both distinguished as philologists, but not for much besides. With their knowledge of Latin and Greek they explained the dialect of the Talmud, and corrected errors which had crept into the earlier Talmudical lexicons. David de Lara (1610-1674) was also a preacher and writer on morals; but his efforts in that direction are of small value. He associated too much with the Hamburg preacher, Esdras Edzardus, who was bent on the conversion of the Jews. The latter spread the false report that De Lara was almost a Christian before he died. Dionysius (Benjamin) Musaphia (born about 1616, died at Amsterdam, 1676), a physician and student of natural science, was up to the date of the monarch's death in the service of the Danish king Christian IV. He was also a philosopher, and allowed himself to question various things in the Talmud and the Bible. Nevertheless he held the office of rabbi at Amsterdam in his old age. Much more important than the whole of this circle was Balthasar Orobio de Castro (1620-1687). He also sprang from Marrano parents, who secretly continued to cling to Judaism, in that they abstained from food and drink on the Day of Atonement. In this meager conception of Judaism, Orobio was brought up. Endowed with clear intellect, he studied the decayed and antiquated philosophy still taught in Spanish academies, and became professor of metaphysics in the University of Salamanca. This fossilized philosophy appears neither to have satisfied him nor to have brought him sufficient means of subsistence, for he applied himself in riper years to the study of medicine. In this pursuit Orobio was more successful; he gained a reputation at Seville, was physician to the duke of Medina-Celi, and to a family in high favor with the court, and amassed considerable wealth. He was a happy husband and father, when the Inquisition cast its baleful glance upon him. A servant, whom he had punished for theft, had informed against him. Orobio was seized, accused of Judaism, and thrown into a narrow, gloomy dungeon, where he had not room to move, and where he spent three years (about 1655-1658).