rational?! Seforim written in English or any other non-jewish language are a recipe for mediocre talmudic scholarship
It is ironic that “rational” does not appreciate works by the most rational Rambam’s Pirush Hamishnayot, Guide, as well as Saadia Gaon, Hovot Halevavot, Kuzari, Rav Shimshon Hirsh.
Oh, and two more books in non-Jewish languages – Bavli and Yerushalmi