This year it is superceded by the Sunday celebration, but today is the feast of St. Thomas Aquinas.
St. Thomas was only about 49 when he died. In his short lifetime he produced an incredible amount of writings. We mostly think of the longer Summa, but he wrote many other things besides that, including commentaries on Scripture.
I have a special love for St. Thomas. Perhaps the best thing we could say about him is what, according to the story, Jesus said to him once in an apparition: "You have written well of me, Thomas!"