“Giving then to matter all the properties which philosophy knows it has, or all that atheism ascribes to it, and can prove, and even supposing matter to be eternal, it will not account for the system of the universe or of the solar system, because it will not account for motion, and it is motion that preserves it. When, therefore, we discover a circumstance of such immense importance, that without it the universe could not exist, and for which neither matter, nor any, nor all, the properties of matter can account, we are by necessity forced into the rational and comfortable belief of the existence of a cause superior to matter, and that cause man calls, God.”

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 58.

The Origin of the Universe (1997)

No other substance but this could produce the human molecule. I know very well that this idea of spirit-matter is regarded as a hybrid monster, a verbal exorcism of a duality which remains unresolved in its terms. But I remain convinced that the objections made to it arise from the mere fact that few people can make up their minds to abandon an old point of view and take the risk of a new idea. … Biologists or philosophers cannot conceive a biosphere or noosphere because they are unwilling to abandon a certain narrow conception of individuality. Nevertheless, the step must be taken. For in fact, pure spirituality is as unconceivable as pure materiality. Just as, in a sense, there is no geometrical point, but as many structurally different points as there are methods of deriving them from different figures, so every spirit derives its reality and nature from a particular type of universal synthesis.
A Sketch of a Personalistic Universe (1936)

De Luce seu de Inchoatione Formarum (c. 1215-1220)
Context: One cause, in so far as it is one, is productive of only one effect. I do not rule out several efficient causes of which one is nearer and another more remote in the same order. Thus when I say simply 'animal', I do not exclude another substance or particular substance. Hence motion, in so far as it is one, is productive of only one effect. But motion is present in every body from an intrinsic principle which is called natural. Therefore an efficient cause simply proportional to the motion is present in all bodies. But nothing is present in common in every body except primitive matter and primitive form and magnitude, which necessarily follows from these two, and whatever is entailed by magnitude as such, as position and shape. But simply through magnitude a body does not receive motion, as is clear enough when Aristotle shows that everything that moves is divisible, not, therefore, simply because of magnitude or something entailed by magnitude is a body productive of motion. Nor is primitive matter productive of motion, because it is itself passive. It is therefore necessary that motion follow simply from the primitive form as from an efficient cause.

Source: The History of Rasselas, Prince of Abissinia (1759), Chapter 48

A Sketch of a Personalistic Universe (1936)
Context: There is neither spirit nor matter in the world; the stuff of the universe is spirit-matter. No other substance but this could produce the human molecule. I know very well that this idea of spirit-matter is regarded as a hybrid monster, a verbal exorcism of a duality which remains unresolved in its terms. But I remain convinced that the objections made to it arise from the mere fact that few people can make up their minds to abandon an old point of view and take the risk of a new idea. … Biologists or philosophers cannot conceive a biosphere or noosphere because they are unwilling to abandon a certain narrow conception of individuality. Nevertheless, the step must be taken. For in fact, pure spirituality is as unconceivable as pure materiality. Just as, in a sense, there is no geometrical point, but as many structurally different points as there are methods of deriving them from different figures, so every spirit derives its reality and nature from a particular type of universal synthesis.

Kosmos (1932)

Upon the Sovereign Sun (362)
Context: From my earliest infancy I was possessed with a strange longing for the solar rays, so that when, as a boy, I cast my eyes upon the ethereal splendour, my soul felt seized and carried up out of itself. And not merely was it my delight to gaze upon the solar brightness, but at night also whenever I walked out in clear weather, disregarding all else, I used to fix my eyes upon the beauty of the heavens; so that I neither paid attention to what was said to me, nor took any notice of what was going on. On this account, people used to think me too much given to such pursuits, and far too inquisitive for my age: and they even suspected me, long before my beard was grown, of practising divination by means of the heavenly bodies. And. yet at that time no book on the subject had fallen into my hands, and I was utterly ignorant of what that science meant. But what use is it to quote these matters, when I have still stranger things to mention; if I should mention what I at that time thought about the gods? But let oblivion rest upon that epoch of darkness! How the radiance of heaven, diffused all round me, used to lift up my soul to its own contemplation! to such a degree that I discovered for myself that the moon's motion was in the opposite direction to that of the rest of the system, long before I met with any works giving the philosophy of such matters.

Author, Third Day. Change of Position<!--p.153 [190]-->
Dialogues and Mathematical Demonstrations Concerning Two New Sciences (1638)
Context: My purpose is to set forth a very new science dealing with a very ancient subject. There is, in nature, perhaps nothing older than motion, concerning which the books written by philosophers are neither few nor small; nevertheless I have discovered by experiment some properties of it which are worth knowing and which have not hitherto been either observed or demonstrated. Some superficial observations have been made, as, for instance, that the free motion [naturalem motum] of a heavy falling body is continuously accelerated; but to just what extent this acceleration occurs has not yet been announced; for so far as I know, no one has yet pointed out that the distances traversed, during equal intervals of time, by a body falling from rest, stand to one another in the same ratio as the odd numbers beginning with unity.