"All nature is meant to make us think of paradise," Thomas Merton observed. Because the Creation puts on a nonstop show, beauty is free and inexhaustible, but we need training in order to perceive more than the most obvious kinds. Even 15 billion years or so after the Big Bang, echoes of that event still linger in the form of background radiation, only a few degrees above absolute zero. Just so, I believe, the experience of beauty is an echo of the order and power that permeate the universe. To measure background radiation, we need subtle instruments; to measure beauty, we need alert intelligence and our five keen senses. Anyone with eyes can take delight in a face or a flower. You need training, however, to perceive the beauty in mathematics or physics or chess, in the architecture of a tree, the design of a bird’s wing, or the shiver of breath through a flute. For most of human history, the training has come from elders who taught the young how to pay attention. By paying attention, we learn to savor all sorts of patterns, from quantum mechanics to patchwork quilts. This predilection brings with it a clear evolutionary advantage, for the ability to recognize patterns helped our ancestors to select mates, find food, avoid predators. But the same advantage would apply to all species, and yet we alone compose symphonies and crossword puzzles, carve stone into statues, map time and space.