In some of these holy edifices they saw pictures that time had not dimmed nor injured in the least, though they perhaps belonged to as old a school of Art as any that were perishing around them.

These were the painted windows; and as often as he gazed at them the sculptor blessed the medieval time, and its gorgeous contrivances of splendor; for surely the skill of man has never accomplished, nor his mind imagined, any other beauty or glory worthy to be compared with these.
It is the special excellence of pictured glass, that the light, which falls merely on the outside of other pictures, is here interfused throughout the work; it illuminates the design, and invests it with a living radiance; and in requital the unfading colors transmute the common daylight into a miracle of richness and glory in its passage through the heavenly substance of the blessed and angelic shapes which throng the high-arched window.
"It is a woeful thing," cried Kenyon, while one of these frail yet enduring and fadeless pictures threw its hues on his face, and on the pavement of the church around him,--"a sad necessity that any Christian soul should pass from earth without once seeing an antique painted window, with the bright Italian sunshine glowing through it! There is no other such true symbol of the glories of the better world, where a celestial radiance will be inherent in all things and persons, and render each continually transparent to the sight of all." "But what a horror it would be," said Donatello sadly, "if there were a soul among them through which the light could not be transfused!" "Yes; and perhaps this is to be the punishment of sin," replied the sculptor; "not that it shall be made evident to the universe, which can profit nothing by such knowledge, but that it shall insulate the sinner from all sweet society by rendering him impermeable to light, and, therefore, unrecognizable in the abode of heavenly simplicity and truth.
Then, what remains for him, but the dreariness of infinite and eternal solitude ?" "That would be a horrible destiny, indeed!" said Donatello.
His voice as he spoke the words had a hollow and dreary cadence, as if he anticipated some such frozen solitude for himself.

A figure in a dark robe was lurking in the obscurity of a side chapel close by, and made an impulsive movement forward, but hesitated as Donatello spoke again.
"But there might be a more miserable torture than to be solitary forever," said he.

"Think of having a single companion in eternity, and instead of finding any consolation, or at all events variety of torture, to see your own weary, weary sin repeated in that inseparable soul." "I think, my dear Count, you have never read Dante," observed Kenyon.
"That idea is somewhat in his style, but I cannot help regretting that it came into your mind just then." The dark-robed figure had shrunk back, and was quite lost to sight among the shadows of the chapel.
"There was an English poet," resumed Kenyon, turning again towards the window, "who speaks of the 'dim, religious light,' transmitted through painted glass.

I always admired this richly descriptive phrase; but, though he was once in Italy, I question whether Milton ever saw any but the dingy pictures in the dusty windows of English cathedrals, imperfectly shown by the gray English daylight.