"Spinoza was a Jew, It is a certified fact that he was born and educated as a Jew. But should we mention the names of other men, perhaps of equal rank with Spinoza, who were likewise bom and educated as Jews, and whom scarcely any Jew would dare to remember proudly and gratefully as a Jew? We need not mention these names, and can indeed regard the proposition as proven, that the Jewish origin and education of a great man, taken by themselves, do not give us the right to claim his greatness for Judaism. Therefore, if one disregards the fact that Spinoza was born and educated as a Jew {a fact from which perhaps not much can be concluded), and if in addition one is not satisfied with vague speculations on Spinoza's Jewish cast of mind; if therefore one wants to know clearly and distinctly where Judaism is lodged in Spinoza's thought, that is, which of Spinoza's decisive ideas bear a peculiarly Jewish imprint — then one will turn with deserved trust to those scholars who have endeavored to determine the Jewish sources of Spinoza's doctrine."
January 1, 1970
https://en.wikiquote.org/wiki/Baruch_Spinoza