St. Augustine presents his ideas of Formlessness in Book 12 of The Confessions.
Chapter III.-Of the Darkness Upon the Deep, and of the Invisible and Formless Earth.
3. And truly this earth was invisible and formless,
999 and there was I know not what profundity of the deep upon which there was no light,
1000 because it had no form. Therefore didst Thou command that it should be written, that darkness was upon the face of the deep; what else was it than the absence of light?
1001 For had there been light, where should it have been save by being above all, showing itself aloft, and enlightening? Where, therefore, light was as yet not, why was it that darkness was present, unless because light was absent? Darkness therefore was upon it, because the light above was absent; as silence is there present where sound is not. And what is it to have silence there, but not to have sound there? Hast not Thou, O Lord, taught this soul which confesseth unto Thee? Hast not Thou taught me, O Lord, that before Thou didst form and separate this formless matter, there was nothing, neither colour, nor figure, nor body, nor spirit? Yet not altogether nothing; there was a certain formlessness without any shape.
Chapter IV.-From the Formlessness of Matter, the Beautiful World Has Arisen.
4. What, then, should it be called, that even in some ways it might be conveyed to those of duller mind, save by some conventional word? But what, in all parts of the world, can be found nearer to a total formlessness than the earth and! the deep? For, from their being of the lowest position, they are less beautiful than are the other higher parts, all transparent and shining. Why, therefore, may I not consider the formlessness of matter-which Thou hadst created without shape, whereof to make this shapely world-to be fittingly intimated unto men by the name of earth invisible and formless?
Chapter V.-What May Have Been the Form of Matter.
5. So that when herein thought seeketh what the sense may arrive at, and saith to itself, "It is no intelligible form, such as life or justice, because it is the matter of bodies; nor perceptible by the senses, because in the invisible and formless there is nothing which can be seen and felt;-while human thought saith these things to itself, it may endeavour either to know it by being ignorant, or by knowing it to be ignorant.
Chapter VI.-He Confesses that at One Time He Himself Thought Erroneously of Matter.
6. But were I, O Lord, by my mouth and by my pen to confess unto Thee the whole, whatever Thou hast taught me concerning that matter, the name of which hearing beforehand, and not understanding (they who could not understand it telling me of it), I conceived
1002 it as having innumerable and varied forms. And therefore did I not conceive it; my mind revolved in disturbed order foul and horrible "forms," but yet "forms;" and I called it formless, not that it lacked form, but because it had such as, did it appear, my mind would turn from, as unwonted and incongruous, and at which human weakness would be disturbed. But even that which I did conceive was formless, not by the privation of all form, but in comparison of more beautiful forms; and true reason persuaded me that I ought altogether to remove from it all remnants of any form whatever, if I wished to conceive matter wholly without form; and I could not. For sooner could I imagine that that which should be deprived of all form was not at all, than conceive anything between form and nothing,-neither formed, nor nothing, formless, nearly nothing. And my mind hence ceased to question my spirit, filled (as it was) with the images of formed bodies, and changing and varying them according to its will; and I applied myself to the bodies themselves, and looked more deeply into their mutability, by which they cease to be what they had. been, and begin to be what they were not; and this same transit from form unto form I have looked upon to be through some formless condition, not through a very nothing; but I desired to know, not to guess. And if my voice and my pen should confess the whole unto Thee, whatsoever knots Thou hast untied for me concerning this question, who of my readers would endure to take in the whole? Nor yet, therefore, shall my heart cease to give Thee honour, and a song of praise, for those things which it is not able to express. For the mutability of mutable things is itself capable of all those forms into which mutable things are changed. And this mutability, what is it? Is it soul? Is it body? Is it the outer appearance of soul or body? Could it be said, "Nothing were something," and "That which is, is not," I would say that this were it; and yet in some manner was it already, since it could receive these visible and compound shapes.
Chapter VII.-Out of Nothing God Made Heaven and Earth.
7. And whence and in what manner was this, unless from Thee, from whom are all things, in so far as they are? But by how much the farther from Thee, so much the more unlike unto Thee; for it is not distance of place. Thou, therefore, O Lord, who art not one thing in one place, and otherwise in another, but the Self-same, and the Self-same, and the Self-same,
1003 Holy, Holy, Holy, Lord God-Almighty, didst in the beginning,
1004 which is of Thee, in Thy Wisdom, which was born of Thy Substance, create something, and that out of nothing.
1005 For Thou didst create heaven and earth, not out of Thyself, for then they would be equal to Thine Only-begotten, and thereby even to Thee;
1006 and in no wise would it be right that anything should be equal to Thee which was not of Thee. And aught else except Thee there was not whence Thou mightest create these things, O God, One Trinity, and Trine Unity; and, therefore, out of nothing didst Thou create heaven and earth,-a great thing and a small,because Thou art Almighty and Good, to make all things good, even the great heaven and the I small earth. Thou wast, and there was nought else from which Thou didst create heaven and earth; two such things, one near unto Thee, the other near to nothing,
1007-one to which Thou shouldest be superior, the other to which nothing should be inferior.
