After graduating from the University of Göttingen in 1863, he became a teacher of the Samson-Schule [de] in Wolfenbüttel (1863–64).
He then moved to Breslau to teach in the rabbinical seminary there, a position which he resigned in 1888.
The Prussian Academy of Science sent him to England in 1888 to study English philosophy, and in 1898 to the Netherlands to research the life of Spinoza.
The results of these trips were his "Beiträge zur Englischen Philosophie", published in the Archiv für Geschichte der Philosophie (4-6, 1891), and Die Lebensgeschichte Spinoza's (Leipzig, 1899).
[1] Freudenthal contributed various essays to publications of the Prussian Academy of Science, such as:[1] His other works include: This biography of a German philosopher is a stub.