themselves miserably by base profits; they are landed
proprietors, are engaged in business, and even devote themselves
to the study of literature and, above all, to medicine and
astronomy; they hold almost everywhere the commission of levying
customs duties, are classed among the most honest people, wear
no outward mark to distinguish them from the Christians, and are
permitted to carry swords and walk about with their arms. In a
word they have equal rights with the other citizens.

A similar statement is made by Joseph Delmedigo, who spent many years in
Livonia and Lithuania as physician to Prince Radziwill.[14]

In his inimitable manner Gibbon describes the fierce struggle the Greek
Catholic Church had to wage before she obtained a foothold in Russia,
but he neglects to mention the fact that Judaism no less than paganism
was among her formidable opponents. The contest lasted several
centuries, and in many places it is undecided to this day.[15] The
Khazars, who had become proselytes in the eighth century, were
constantly encroaching upon Russian Christianity. Buoyant as both were
with the vigor of youth, missionary zeal was at its height among the two
contending religions. Each made war upon the other. We read that Photius
of Constantinople sent a message of thanks to Archbishop Anthony of
Kertch (858-859) for his efforts to convert the Jews; that the first
Bishop of the Established Church (1035) was "Lukas, the little Jew"
(Luka Zhidyata), who was appointed to his office by Yaroslav; and that
St. Feodosi Pechersky was fond of conversing with learned Jews on
matters of theology.[16] On the other hand, the efforts of the Jews were
not without success. The baptism of the pious Olga marks an era in
Russian Christianity, the beginning of the "Judaizing heresy," which
centuries of persecution only strengthened. In 1425, Zacharias of Kiev,
who is reputed to have "studied astrology, necromancy, and various other
magic arts," converted the priest Dionis, the Archbishop Aleksey, and,
through the latter, many more clergymen of Novgorod, Moscow, and Pskov.
Aleksey became a devout Jew. He called himself Abraham and his wife
Sarah. Yet, strange to say, he retained the favor of the Grand Duke Ivan
Vassilyevich, even after the latter's daughter-in-law, Princess Helena,
his secretary Theodore Kuritzin, the Archimandrite Sosima, the monk
Zacharias, and other persons of note had entered the fold of Judaism