Friedrich Schleiermacher. Yes, I know. You never heard of him. He died in 1834. He is sometimes called the father of modern liberal theology.
The German theologian was on my mind a couple of weeks ago because I was teaching a class on the origins and content of liberal theology; not something I do that often. When I googled him to see if his name was showing up in any recent articles, oddly, there it was in a June 27 Washington Post article about Donald Trump.