From ms. Marked 2431 in the Library of the Most Christian King.— Ibid. p. 1336 a. From the Very Holy and Blessed Clement, Presbyter of Alexandria, the Stromatist's Book on Providence
What is God? “God,” as the Lord says, “is a Spirit.” Now spirit is properly substance, incorporeal, and uncircumscribed. And that is incorporeal which does not consist of a body, or whose existence is not according to breadth, length, and depth. And that is uncircumscribed which has no place, which is wholly in all, and in each entire, and the same in itself.
Source: Fragments (New Advent)