Everything that is true comes from the Holy Spirit.

Everything that is true, let it be taught and proclaimed by anyone, is from the Holy Spirit, Thomas Aquinas would say. Therefore, he was not afraid to seek truth even in the books of the Mohammedan Arabs, Jews, and pagan Aristotle, and he fused all of it in the furnace of his soul into one metal...

(Adolf Kajpr SJ /1902–1959/;
excerpt from the paper “Saint Thomas Aquinas,” published in “The Messenger of the Divine Heart of the Lord,” 1938;
quoted from the book Presence is God's Own Time. Refugium 2021)