sentences:  Senior studied Hebrew and Talmud under his father's tutelage, and while still a boy, manifested a predilection for Hebrew literature.He became acquainted with Joshua Klein, parnas of the Kėdainiai community, who furnished him with Haskalah books, including the works of Erter.Erter's writings so impressed Sachs that he considered immediately moving to Brody in order to study under him, but Sachs' early marriage, in accordance with the custom of that time, prevented him.