Ramanuja was a theologian, philosopher, and scriptural exegete. Grotius was a philosopher, theologian, playwright, and poet. Carus considered himself a theologian rather than philosopher. Thomas Aquinas was a theologian and a Scholastic philosopher. The name Q was coined by the German theologian and biblical scholar Johannes Weiss. Abhinavagupta was a theologian and philosopher of the Kashmir Shaivism (Shiva) tradition. President Barack Obama said that Niebuhr was his " philosopher" and "favorite theologian". Parrish categorized Brueggemann as being an exegete and theologian. Another Protestant theologian who disparaged heliocentrism on scriptural grounds was John Owen. This view was also shared by an earlier theologian and jurist, Abu Hanifa. Contemporaries regarded him highly as a natural theologian. The Foundation follows the ideals of the Protestant theologian, Friedrich Naumann. Origen was an outstanding theologian and one of the most influential Church Fathers. Jan Hus, a theologian and rector at the Charles University, preached in Prague. He became close to the geologist and natural theologian, William Buckland.