“The
glass windows in a church are Holy Scriptures which expel the wind and the rain,
that is, all things hurtful, but transmit the light of the true Sun, that is,
God, into the hearts of the faithful.” --Bishop Durandus, 1237-1296
One of the most important elements of Gothic cathedrals is the effect of light within their interiors. The flood of light through the windows was a majestic illustration of God's grace being cast upon the darkness of humanity. The effect upon the worshiper was one of somber reflection and humility.