The Trinity.With the Cusan the threefold nature of the Highest Being is deduced as a necessity of Reason: it is (1) unity eternal; (2) sameness or equality eternal; and (3) the union of unity and equality. As there cannot be three eternal and highest beings, these three are necessarily one—the Unity (the Father) produces or begets from itself the same (the Son), and out of both springs their union (the Holy Ghost), yet each of these in the One is one and the same.[228] In the universe, the created world, there is also a Trinity, since it is a copy or reflection of the Divine. (1) Possibility or Matter, the unlimited, indeterminate, but capable of being limited and determined, corresponds to the unity of the eternal; (2) Actuality, or Form, the limiting or determining something, that which limits, corresponds to the sameness or equality of the Eternal; and (3) the unifying movement by which the possible receives actuality, matter receives form, implying a spirit of union, of Love, corresponds to the Absolute Union, the Holy Ghost.[229] At a later stage of his philosophy, however, the Cusan gave a second deduction of the Trinity.[230] God is both Absolute Possibility, Absolute Power or Potency (the Creative Word, the Son), and the union of both in Absolute Reality; yet these are merely different aspects or points of view of the Eternal Being. Again, God is the identity of knowing, or intellect, the knowable or intelligible (the Word), and love, as the inter-relation of each with each, the striving of the knowing after the knowable, its highest good.[231] Bruno also adopts the Trinity of Possibility or Matter, Potency or Form, and Reality, but it is applied at once to God and to Nature as two sides of the same thing. As the Divine potency is infinite, so is nature, its expression, infinite; matter and form do not in their origin stand opposed to one another, as if separated from one another, any more than power and possibility are separate in God; all that can be is realised; matter has in itself all possible forms, and produces these out of itself in the successive moments of time; the universe is eternal, therefore, in order that the infinite power may in it be realised. In all these respects Bruno transforms the orthodox Cusanus’ conception of a created and finite world; although nowhere perhaps has the idea of a creation been more skilfully woven into a profound philosophical system than in the Cardinal’s quaint dialogues. The Cusan does not attempt the impossible, to account for the fact of creation—“God comprehends (or contains) all things, for all things are in Him, and He unfolds all things out of Himself, for in all things He lives”; but the essence and the process of the comprehension and the unfolding are unknowable by us, just as we can never understand how chance comes to be united with necessity (creation) in the world. It is to this incomprehensible partnership that the imperfections of created things are attributed. In its reality the universe is finite, limited; in its possibility (i.e. its idea) it is infinite, but only privatively infinite—that is, God could still call a more perfect universe into existence than it has actually pleased Him to do. Only He, as the Absolute Greatest, is infinite in the full negative sense, i.e. that which can neither be nor be thought greater than it is. Here Bruno’s theory is in complete contrast with that of the Cusan. There are, however, many consequences that both alike have drawn, as that no two things in the universe are wholly and in all respects alike (the identity of indiscernibles); each thing expresses the nature of the whole in a special way, but all things may be arranged in graduated scales from the lowest to the highest, or from any one to any other, i.e. there are no absolute differences, only differences of degree. Nor are there absolute centres in the universe, or in any of the worlds, nor perfect figures—thus there are no perfect circles described, e.g. by the planets, in nature. A further corollary was that the whole is mirrored in each of the parts, as each particular thing partakes of the soul or creative force of all; each does not, however, mirror or reflect the Divine nature with the same adequacy as every other; some do so more perfectly than others, man most perfectly of all.[232] Cusanus did not definitely accept the suggestion of a soul of the universe, analogous in its relation to the world to the soul of man in the body; still less did he identify it with God, as Bruno tended more and more to do. Hence he escaped the fantastical consequences of the belief in Universal Animism, which were drawn without reserve by the Renaissance writers—the consequence, e.g. that if one soul, one nature, pervades all things, and is the life of all things, then out of each may be produced any other—out of lead, gold, etc. On the other hand, the four elements at least were different forms of the same fundamental being, and might be produced each out of the other; and, in common with Bruno, Cusanus held the pre-Aristotelian belief in Atomism:—there cannot be division of anything, cube or surface, or line—ad infinitum; ultimately there must in each kind be a minimum,[233] an atom, beyond which we cannot in fact go, although to thought it may be still further divisible; so there is in every figure, in every kind of thing, a definite number of atoms. It was partly this thought, partly also the mystical value from time immemorial given to the different numbers and geometrical figures, that led both Cusanus and Bruno to look to mathematics and geometry for the true method or organon of natural science. “Number is the natural and fruitful principle of the understanding’s activity; irrational beings do not number. But number is nothing but the unfolding of the understanding. Without it the understanding would have none of the results to which it attains.... Nothing can exist before number, for all that goes beyond the simplest unity is in its fashion a composite, and, therefore, without number is unthinkable, for multitude, difference, and relation of parts arise from number.”[234] In both again human knowledge proceeds inversely as creation (or emanation) from number, the many, back through successive grades of simplicity to the one highest, most simple, God, in whom are all things complicitly (without number). “What appears to us as after another, successive, is by no means after in Thy Thought, which is eternity itself. The single thought, which is Thy word, embraces (complicat) all and each in itself, Thy single word cannot be manifold, opposite, changeable.... In the eternity in which Thou thinkest, coincides all the after another of time, with the now of eternity. There is, therefore, no past nor future where future and past coincide with the present.”[235] The merely logical understanding, that which is based upon sense and requires sense-images for its material, is inadequate to this highest knowledge, gives approximation merely, and we are thrown back upon mystical intuition on the one hand, reasoned faith on the other, for our insight into the true nature of the One and the All.[236]
Agrippa of Nettesheim.Other influences which gave direction to Bruno’s genius belong rather to physical science and pseudo-science than to philosophical theory. Cornelius Agrippa of Nettesheim (1487–1535), the scholarly adventurer, the Faust who acquired all the knowledge and most of the arts of his time, wrote a compendium and justification (from Neoplatonist philosophy) of magical practices,[237] and at the close of his life the great declamation “on the uncertainty and vanity of all sciences and arts,”[238]—a plea for the simple life and the simple gospel. The De occulta philosophia is the chief source from which Bruno drew the fantastical lore of the De Monade.[239] The satires upon Asinity, as the chief human virtue, in the Spaccio and the Cabala, directed as they are against blind faith without works or wisdom, found their occasion at least in Agrippa’s praise of the Ass (in the De Vanitate) as the mouthpiece of God in the story of Balaam, and the bearer of Christ in the New Testament history.
Paracelsus.Paracelsus[240] proposed a reform of medicine on Neoplatonist principles, attacking the Galenian doctrine of the Four Humours, which was based on the four elements of the Aristotelians (the warm and the cold, the moist and the dry). His own more “natural” theory made salt, sulphur, and mercury the (chemical) elements of all things—those which in living organisms were vivified and directed by an inner spirit (e.g. the Archaeus in man), a direct emanation from the soul of the universe. Through their common constitution, and the spirit that infused all things alike, there was a subtle, mysterious sympathy between the microcosm and the macrocosm, the individual body and the universe, and it was by the study of the relations (magical, astrological, and the rest) between the stars and the things of earth, between the different metals and the body of man, that Paracelsus proposed to reform the art of medicine. Bruno, in the Causa,[241] praises Paracelsus for his “philosophical” treatment of medicine, that he did not rest content with the three chemical principles alone for explanation of the different vital phenomena, but sought the true principle of life everywhere in a spirit or soul. He is one of the builders of the temple of wisdom,—ad miraculum medicus.[242] In his magical writings and in the De Monade, Bruno is largely indebted for materials to Paracelsus. Cardanus.The same general tendency, the desire for a return to nature and to sense-observation as opposed to the authority of Aristotle, and to the cult of logical or grammatical subtleties, is found also in Cardan.[243] In his work there is the same mixture of mathematics and physical science with theology, magic, and Neoplatonism, and to him Bruno owes many of his superstitions. Telesio.The more profound Telesio also (who before Bruno “made honourable war upon Aristotle”)[244] attempted, independently of all authority, from sense-knowledge and induction alone, to penetrate the mysteries of nature.
Copernicus.Only one name remains with which that of Bruno is indelibly associated—that of Copernicus, whose De orbium coelestium Revolutionibus was published in 1543. It was his theory of the solar system, coinciding as it seemed with that of the most ancient philosophers, that gave the decisive trend to Bruno’s thought, holding him fast to the one all-important fact that the earth is not the centre of the universe but one of its humblest members. Without the solid arguments of Copernicus, Bruno’s superb conception of the cosmic system would have remained a dream, an intuition of genius, rather than a well-grounded forecast of modern scientific discovery. “There is more understanding,” said Bruno, “in two of his chapters than in the whole philosophy of nature of Aristotle and all the Peripatetics.[245] Grave, thoughtful, careful, and mature in mind, not inferior to any of the astronomers that went before him—in natural judgment far superior to Ptolemy, Hipparch, Eudoxus, and all the others that have walked in their footsteps—a height he attained by freeing himself from the prejudices, not to say blindness, of the vulgar philosophy. Yet he did not get beyond it; being more a student of mathematics than of nature, he was unable wholly to uproot all unfitting, vain principles, to solve all contrary difficulties, liberate both himself and others from so many vain inquiries, and fix their contemplation on things abiding and sure. With all that, who can sufficiently appraise the greatness of this German, who paid little heed to the foolish multitude, and stood solid against the torrent of opposing belief. Although almost destitute of living reasons for weapons, he took up those cast-off and rusty fragments that he could get to his hand from antiquity; repolished them, brought the pieces together, mended them, so that through his arguments—mathematical rather than physical though they were—he made a cause that had been ridiculed, despised, neglected, to be honoured and prized, to seem more probable than its contrary, and certainly more suitable and expeditious for calculation.”[246] Copernicus had put forward the theory as a hypothesis merely, and had shown how much more simply the different positions of the sun and planets as seen from the earth could be explained by it, and how much more accurately they could be calculated. In the Epistle prefixed to his work (said by Bruno not to be by Copernicus himself), the reader was warned of the folly of taking this hypothesis as true. To Bruno the contrary of the hypothesis was absurd. Bruno did not appreciate the mathematical proofs of Copernicus, and constantly spoke of him as too much of a mathematician, too little of a physicist: his own mathematical demonstrations were, however, much less successful than those of his predecessor.[247]
CHAPTER II
THE FOUNDATIONS OF KNOWLEDGE[248]
It is the object of this chapter to give some account of the speculations on nature and spirit which occupied Bruno during his first year in England, and which show how hard he was striving to pierce through the shell of mediæval thought in which his mind was encased. However fiercely he struggled to gain his freedom, it was impossible that he should do so quite at once. With all his contemporaries, he was imbued in Aristotle’s ways of thought, and the problems he set himself to answer were largely determined for him by Aristotle. The categories with which he wrought,—“principle,” “cause,” “form,” “matter,” “potency,” “act,” “subject,” were those of the Stagirite, and were open, therefore, to the same charge of unfruitfulness. On the other hand, while the outward form of Bruno’s philosophy, and to a certain extent its matter also, were essentially Aristotelian, the spirit which infused it all was not so; the emotion and enthusiasm with which he wrote savoured rather of the fire of Plato than of the logical mind of his successor; and throughout, the new conception of nature and of mind which belongs to modern philosophy was struggling to the light.
From his Platonist masters Bruno had learned that the Highest or First Principle was unknowable to man, being beyond the reach of his senses and of his understanding alike: a complete systematisation of knowledge was therefore impossible. A philosophy of nature had to seek only for physical (i.e. real or “immanent”) causes or principles; these might depend, indeed, upon the highest and first principle or cause, but the dependence was not so close that the knowledge of the former gave us knowledge of the latter: no single system of knowledge could embrace both. Knowing the universe, we yet knew nothing of the essence or substance of its first cause, any more than that of the sculptor Apelles could be inferred from the statue he had made. The things of nature, although effects of the divine operation, became the remotest accidents, when regarded as means to the knowledge of the divine supernatural Essence. “We have still less ground for knowing it than for knowing Apelles from his finished statues, for all of these we may see, and examine, part by part, but not the great and infinite effect of the divine potency.”[249] The First Principle is, therefore, the concern of the moralist and of the theologian, as revealed to them by the gods, or declared to them through the inspired knowledge of diviner men and of the prophets. On the other hand, in the universe we have the infinite image of God, and it is, therefore, possible through it to obtain an approximate knowledge of Him: “the magnificent stars and shining bodies, which are so many inhabited worlds, and animate beings or deities, worlds similar to that which contains ourselves, must depend, since they are composite and capable of dissolution, upon a principle and cause; and consequently, by their greatness, their life and work, they show forth and preach the majesty of this first principle and cause.”[250] Thus the starting-point of Bruno’s mature philosophy is nature as the vestige or imprint of divinity, and divinity is considered only “as nature itself or as reflected in nature”: the presence of a transcendent principle above and beyond nature is, indeed, premised to the discussion of the Causa, but it is no longer admitted that its study falls within the philosopher’s scope, nor does it ever hamper or in any way influence the course of the argument. So far from that, we find, at the completion of the dialogue, that we have arrived at an immanent principle or divinity, which renders the transcendent superfluous.
The purpose of the Causa,[251] Bruno’s first purely philosophical work, was to determine what are the creative and constitutive principles of the natural world,—its efficient cause, its end, its form, its matter, and its unity; or, in other words, to lay down the “foundations of knowledge,” to give an outline-picture of reality the details of which it was left to experience and observation to fill in. Bruno begins by laying down certain distinctions, which, however, do not, in the end, prove very binding. Principle: Cause.First, a principle (principio) is that which enters, intrinsically, into the constitution of a thing, while a cause concurs from without in its production; thus, matter and form, which are principles rather than causes, are the elements of which a thing is composed and into which it is resolved. A cause, on the other hand, remains outside of the resultant object—for example, the efficient, creating cause, and the end or final cause for which the thing is ordained. Principle is the more general term, for “in Nature, not everything that is principle, is also cause: the point is principle of the line, not cause; the instant, of the event; the starting-point, of the movement; the premisses, of the argument.”[252] God is both principle and cause, but from different points of view: “He is first principle in so far as all things are posterior to him in nature, duration, or dignity; he is first cause in so far as all things are distinguished from him as effect from efficient, thing produced from producer. The points of view are different, for not always is the prior and more worthy a cause of that which is posterior and less worthy; and not always is the cause prior and more worthy than that which is caused.”[253] There are really two marks of a principle given by Bruno, priority in worth, and internality; but, generally, a principle is that without which a thing could not come into being, and which if taken away would take away also the being of the thing. To a cause the latter half of this description would not apply, as it remains outside of the effect. Thus God as principle is immanent in all things, and is the higher source from which they proceed. This twofold interpretation of the relation of God to nature and to natural things was already inherent in the Neoplatonic doctrine which formed Bruno’s starting-point, since God as the source of emanation was outside of the emanations themselves, and was unaffected by them; on the other hand, the gradations in the different stages of emanation, and the possibility of rising from the lowest to the highest, to the One above all, implied the existence of somewhat of the One as a common nature in all. The two points of view were, however, held apart, and the contradiction between them was not consciously perceived, so that the coincidence of nature between God as the source, and matter as the lowest emanation, never suggested itself; on the contrary, their complete opposition was maintained until Bruno put forward his theory of the “divinity of matter,” which forms the real theme of the Causa.
Efficient cause of nature.The efficient cause of the natural world is the universal intelligence, “the first and principal faculty of the soul of the world.” This intellectus universalis is to natural things as our intellect to the thoughts of our mind, and Bruno identifies it with the Demiurge of the Platonists, and the “seed-sower” of the Magi, for it impregnates matter with all “forms”: it is an artefice interno, for it works from within in giving form and figure to matter, as the seed or root from within sends forth the stem, the stem the branches, the branches the formed twigs, and these the buds; “from within leaves, flowers, fruit are formed, figured, patterned; from within again in due time the sap is recalled from leaves and fruit to twigs, from twigs to branches, from these to stem, from stem to root.... But how much greater an artificer is he that works not in any single part of matter alone, but continually and in all.”[254] The intellectus is both external and internal to any particular being; i.e. it is not a part of any particular existence, is not exhausted by it, therefore is so far external to it; on the other hand, it does not act upon matter from without, but from within,[255] the efficient cause is at the same time an inward principle.