O Light eternal, surpassing all created brightness, flash forth the lightning from above and enlighten the inmost recesses of my heart. Cleanse, cheer, enlighten, and vivify my spirit with all its powers, that it may cleave to You in ecstasies of joy. Oh, when will that happy and wished-for hour come, that You may fill me with Your presence and become all in all to me?
Thomas a Kempis, Imitation of Christ