The authors of the _Manifesto_ were men of great intellectual gifts. Either of them alone must have won fame; together, they won immortality. Their lives, from the date of their first meeting in Paris, in 1844, to the death of Marx, almost forty years later, are inseparably interwoven. The friendship of Damon and Pythias was not more remarkable. Karl Heinrich Marx was born on the fifth day of May, 1818, at Treves, the oldest town in Germany, dating back to Roman times. His parents were both people of remarkable character. His mother--_nee_ Pressburg--was the descendant of Hungarian Jews who in the sixteenth century had settled in Holland. Many of her ancestors had been rabbis. Marx was passionately devoted to his mother, always speaking of her with reverent admiration. On his father's side, also, Marx boasted of a long line of rabbinical ancestors, and it has been suggested that he owed to this rabbinical ancestry some of his marvelous gift of luminous exposition. The true family name was Mordechia, but that was abandoned by his grandfather, who took the name of Marx, which the grandson was destined to make famous. The father of Karl was a lawyer of some prominence and considerable learning, and a man of great force of character. In 1824, the boy Karl being then six years old, he renounced the Jewish religion and embraced Christianity, all the members of the family being baptized and received into the Church. There is a familiar legend that this act was the result of compulsion, being taken in response to an official edict.[46] He held at the time the position of notary public at the county court, and it is claimed that the official edict in question required all Jews holding official positions to forego them, and to abandon the practice of law, or to accept the Christian faith. Many writers, including Liebknecht[47] and one of the daughters of Karl Marx,[48] have given this explanation of the renunciation of Judaism by the elder Marx. It seems certain, however, that the act was purely voluntary, and that there was no such edict.[49] It may be that social ambitions had something to do with it, that he hoped to attain, as a Christian, a measure of success not possible to an adherent of the Hebrew faith. Whatever the motive, the act was a voluntary one. A great admirer of the eighteenth-century "materialists," and a disciple of Voltaire, he believed in God, he said, as Newton, Locke, and Leibnitz had done before him. He discussed religious and philosophical questions very freely and frankly with his son, and read Voltaire and Racine with him. As for the mother of Marx, she also believed in God--"not for God's sake, but for my own," she explained when asked about it.