High in the west wall of the great churches burns the rose — a wheel of stone and colored glass, geometry made light. It is the most mathematical thing in the cathedral and the most mystical: a circle (eternity, with no beginning) divided by number (creation, which is ordered) into petals of glass that turn raw daylight into fire. It has long been read as an image of heaven itself — the ordered cosmos, Christ at the hub, the whole turning around Him.
No two alike
The window above was generated for this moment — its tracery drawn fresh, so the one you are looking at has, most likely, never existed before and will not persist unless you keep it. Cast a new one as many times as you like; when one pleases you, keep it, and it downloads as a clean vector you can print or set as your own light. Hover a petal to make it glow; in a quiet room, it will sound.
Reading the geometry
Many roses are built on a sacred number — often twelve, for the tribes of Israel and the apostles of the Lamb, sometimes multiplied to twenty-four for the elders of the Apocalypse. From the hub the design radiates in perfect symmetry, because heaven, to the medieval eye, was not chaos relieved by beauty but order that is beauty. The rose is a theology you can see before you can read.
Last reviewed for accuracy on , against the Douay-Rheims Bible and the Church's own documents.