Shalom aleichem Rabbi Lauffer. Thank you for answering my last question. In Rabbi Avigdor Miller’s latest q and a email he says “So you might think that the college boys and girls come carrying philosophical books under their arms and Chabad comes to greet them with sefarim like Chizuk Emunah and Kuzari and Moreh Nevuchim and there’s a philosophical encounter.” Which sefer is he referring to when he says “Chizuk Emunah”? Who was the author? Thanks a lot.