From the eleventh of Gregory of Nyssa’s Homilies on the Song of Songs:
The person who has drawn near to the fountain will marvel at that limitless supply of water that ever gushes out and flows from it, yet he would not say that he has seen all of the water. (For how can he see the water that is still concealed in earth’s bosom? The fact is that even if he remains for a long time at the gushing spring, he is always just beginning to contemplate the water, for the water never stops in its everlasting flow nor does it ever cease beginning to gush forth.) In the same way, the person who looks toward that divine and infinite Beauty glimpses something that is always being discovered as more novel and more surprising than what has already been grasped, and for that reason she marvels at that which is always being manifested, but she never comes to a halt in her desire to see, since what she looks forward to is in every possible way more splendid and more divine than what she has seen.
(Gregory of Nyssa, Homilies on the Song of songs, translated with an introduction
and notes by Richard A. Norris Jr., Atlanta: Society of Biblical Literature 2012, p. 339)