 In 1783, Mendelssohn asked Maimon to leave Berlin due to Maimon’s open Spinozism and his bohemian lifestyle. After a journey to Hamburg, Amsterdam and then back to Hamburg, Maimon entered the Gymnasium Christianeum in Altona, where he stayed for two years. During this period Maimon studied several European languages and improved his knowledge of the natural sciences and his command of German. In 1785, Maimon left Altona for Berlin, where he met Mendelssohn for the last time. Later that year Maimon moved to Dessau, where he wrote a Hebrew textbook on mathematics, and subsequently settled in Breslau. Here, after a failed attempt to study medicine, Maimon again took up the position of a tutor. While staying in Breslau, Maimon translated Mendelssohn’s Morgenstunden into Hebrew (a manuscript which is now lost) and wrote a Hebrew textbook of Newtonian physics — Ta’alumoth Hochma (“Mysteries of Wisdom”). After more than a decade of separation, Maimon’s wife, Sarah, accompanied by their eldest son, David, succeeded in locating him in Breslau, and demanded that he either return to Lithuania or get a divorce. Reluctant to sever his ties with his past, Maimon tried to postpone the decision, but after his wife insisted that he must make the choice, he finally agreed to the divorce.