“A beautiful rose window is ultimately one that presents a new face every hour of the day and every day of the year. It is in a way a vast symphony which never ceases to enchant with its infinite variety in the perfection of its cycle. In these grandiose constructions of geometry and light, the artist becomes a creator of spheres, in unison with the music and dance of the cosmos. (…)”. 

Painton Cowen, Medieval Roses.