Think of all the non-Jewish thinkers who inspired Jewish thought.
The Kalam influenced Rav Saadia Gaon.
Aristotle influenced Rambam.
Friedrich von Schiller influended Rav Hirsch.
Soren Kierkegaard and Rudolf Otto influenced Rav Soloveitchik.
John Dewey influenced Rav Shlomo Wolbe.
There are quite a few others, but here are but a few examples.