Analogical Diagram from Tobias Cohens Maaseh Tuviyah (1708)

Born in Metz, Tobias Cohen (1652–1729) was the son of a rabbi-physician who fled from Narol, Poland, during the mass atrocities of the Khmelnytsky Uprising. He studied medicine in Frankfurt an der Oder, as one of the first Jewish students admitted to the university, before transferring to a more welcoming preparatory school in Padua. Here Cohen fell under the influence and protection of Solomon Conegliano, whom he would later call “prince among philosophers and mighty among physicians”. After completing his degree in 1683, Cohen served as a physician to several sultans of the Ottoman Empire, in both Adrianople and Constantinople, retiring to Jerusalem in 1715. Scholars believe that Cohen completed Ma’aseh Tuviyah in 1700, but it was not published until 1708 in Venice, where it underwent additional print runs throughout the eighteenth and nineteenth centuries. In David B. Ruderman’s estimation, Tobias Cohen’s encyclopedic work of medicine, theology, and other fields of knowledge is “the most influential early modern Hebrew textbook of the sciences”.

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