I am willing to let it rest on the determination of every reader, whether the pleasure which he has received from these effects of calm and luminous distance be not the most singular and memorable of which he has been conscious... It is not then by nobler form, it is not by positiveness of hue, it is not by intensity of light... that this strange distant space possesses its attractive power. But there is one thing that it has, or suggests, which no other object of sight suggests in equal degree, and that is—Infinity. ...No work of any art, in which this expression of infinity is possible, can be perfect or supremely elevated, without it.
John Ruskin, Modern Painters (1860) Vol. 2, Ch. V