Catholic scientists like Fr. Georges Lemaitre (who discovered the Big Bang) and the friar Gregor Mendel (who discovered genetic inheritance), followed the medieval motto fides quaerens intellectum, or “faith seeking understanding,” and were among those who contributed to the flourishing of modern science. Belief in a God who carefully made the world and watches over it is one of the reasons Christians have desired to explore how the world works through the natural sciences.

