From the book
Marsilio Ficino’s Platonic Theology, Volume II
Marsilio Ficino · Diotimos Editions · 2026
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At a Glance
- The wordA causa is that through which something is, comes to be, or receives a determination.
- In the Platonic TheologyThe central question is not simply which thing caused an earlier thing.
- In this editionThe comparison-unit references are editorial divisions of the Diotimos edition.
- A place to readFicino specifies the rational-soul scope of the discussion and distinguishes irrational lives as images of souls.
Meaning
A causa is that through which something is, comes to be, or receives a determination. Prima identifies what is first in an order; in the central passages of this volume, the first cause is God, the source on which all things depend for being. Principium is a beginning, source or explanatory principle. In V.1023, primum principium and causa prima refer to the same divine source while describing it as principle and cause respectively. Neither expression by itself requires an event earlier than every other event.
Principalis means principal or chief. A principal cause is distinguished from an instrument within a specified operation. In VII.8.1 the question is what governs an animal’s growth: the soul is the directing agent, whereas heat serves as an instrument. A principal cause of growth is therefore not automatically the first cause of all being. The dictionary forms displayed above are lookup forms; the exact constructions include causam primam, a prima rerum causa, ad primum principium, tamquam causa principali and principalis agentis.
“Primary cause” needs particular care. That exact English phrase does not occur in the supplied Volume II, and its numbered Latin text has no form of primarius. The translation does use “primary intention” for principali... proposito in V.5.2, “primary motion” for the language of primo in V.12345, and “principal cause” in VII.8.1. A reader encountering “primary cause” in another translation should first check which Latin expression and which contrast lie behind it. It can be an English label for the first cause, or a way of describing the chief agent; the English adjective alone does not establish a second divine cause.
Use in the book
The central question is not simply which thing caused an earlier thing. It is what an effect receives, from what kind of source it receives it, and whether that dependence makes its existence vulnerable to bodily dissolution. God, rational soul, bodily form, heat and an instrument can all enter causal accounts, but they do not enter them in the same way. The distinction between an ultimate source and a chief agent within a particular operation provides the first orientation; the distinctions between the four causes, formal self-possession and efficient production then make that orientation precise. V.2.1 explicitly establishes that “soul” in this discussion normally means rational soul; the account of its immediate creation must not be extended without qualification to every lower form of life.
Four causes and unequal kinds of independence. V.5.1 names efficient cause, end, matter and form. In its human example, universal nature together with a human being is the efficient cause, human happiness is the end, body is matter, and soul is form. These are explanatory roles rather than four competing makers. God alone excludes all four kinds of cause from his own dependence: nothing makes, constitutes or completes him. Every lower being still has an efficient cause and an end. The subsequent ascent therefore cannot mean that soul becomes a second uncaused divine being.
Ficino distinguishes levels by what each requires. A natural body requires all four causes. Quality is already a form and so does not require another formal cause in that respect, but remains dependent on matter, a producer and an end. The third essence, soul, is free from material dependence as well: it has efficient and final causes but no matter or additional form as constitutive causes. The soul’s inclination toward matter is not its dependence on matter for being. The angel’s further superiority in V.5.5 concerns its lack of that inclination; the argument does not make angel or soul independent of God. Thus per se has a qualified use for soul and an unqualified use for God. To translate both with “through itself” and then treat the two beings as equally self-originating would erase the chapter’s argument.
First cause and first principle in V.1023. V.10.1 takes up a possible objection: perhaps the soul exists always only under some condition. Ficino allows its relation to the first cause, but denies that the condition is bodily assistance. All things remain in being through their relation to the first cause. That source is the purest act, and lower things resemble it through form rather than through matter. A natural composite bears the likeness through only one constitutive part; a form immersed in body is in turn related to the first cause through a higher source. V.10.2 describes the dependent bodily image as hanging from a face reflected in a mirror. The image cannot simply detach itself and retain its being.
The argument uses “first cause,” “first principle,” and God within the same connected sequence. These are descriptions of the same source, not a list of three separate entities. Principium emphasizes the source or ground toward which the account is traced; causa emphasizes dependence and production. At the lower level, by contrast, soul mediates the production of bodily qualities through its changing operations. Those effects change because their mode of dependence includes that mutable operation. The distinction is between how the effect depends and what kind of stability belongs to the dependent effect, not between dependence and complete autonomy.
V.10.3 then argues that soul relates to God through its own stable essence. The soul is the cause of its own relation, and the relation is the source of its perfection. This carefully limited claim does not say that soul efficiently creates its own essence. Ficino’s concluding image keeps both sides together: God continually overflows, while soul continually draws and drinks being. Soul’s stable relation to God through its own essence is the way in which it remains dependent upon the divine source. The image joins permanence to reception rather than replacing reception with self-sufficiency.
Being itself and determinate effects. V.13.1–4234 distinguishes the common gift of being from the particular modes in which things are. The chapter opens by reporting that Plotinus, Proclus and some other Platonists make soul originate from angel, then explicitly prefers Dionysius, Origen and Augustine on its production by God alone. Those affiliations are Ficino’s presentation here; the argument does not establish the exact wording or full position of every named author independently.
The common feature of all effects is that they are. Particular effects also have determinate conditions: being human, being hot, being this individual, being of a particular kind. Ficino assigns being itself to God and diverse determinations to diverse causes acting through God’s power. His examples are deliberately concrete: that someone is comes from God; that the person is human also involves a human parent; that someone is hot can come from fire. The parent and the fire are not thereby competing first causes. They contribute particular effects within an order whose agents, powers and effects already depend upon the universal source.
V.13.4 explicitly matches the first gift, being itself, with the first cause, and second or third gifts with subsequent causes. The phrase here is sequentibus causis, “subsequent causes.” It should not be misquoted as a printed occurrence of causae secundae. “Secondary causes” is a useful explanatory grouping, provided the reader understands that it describes their subordinate role rather than supplying the exact wording of this sentence. Likewise, “being after nothing” in V.13.3–42 marks the explanatory priority of being over its determinations. The same chapter states that creation does not occur through motion or time. It therefore cannot be reduced to a sequence in which nothingness is an earlier material waiting to be changed.
Creation and the limits of an instrument. A created producer acts upon a foundation and brings a possibility into actuality: the sculptor works stone, and a human parent generates from seed. Nothingness, by contrast, is not a receptive material or an undeveloped capacity. V.13.5–62 argues that the transition from nothing to being requires an unlimited power. V.13.7–13234567 adds that a creature’s essence, being, power and operation are distinguishable; its operative power is received and bounded. God alone creates in the strict sense at issue. “No creature creates” here does not mean that creatures cannot generate, make artifacts, heat bodies or perform real actions. It means that they do not supply being from no preexisting subject.
V.13.14 tests a proposed compromise: could God be the craftsman while an angel acts as the instrument through which the soul is created? Ficino rejects this proposal. As he describes an instrument here, it is moved by another, affects an underlying subject and conveys the principal agent’s form into that subject over time. Creation requires neither substrate nor motion nor time. V.13.15–162 adds that the divine power would be limited if it had first to be received in a finite angel for the work that requires limitless power. The soul therefore depends immediately on God for its creation. This conclusion concerns the proposed creative instrument; it does not abolish every kind of subordinate agency or every mediation in nature.
V.13.18 makes the distinction explicit in a report attributed to Timaeus and Plato. Rational soul originates immediately through the Idea of life, while irrational life proceeds through rational soul as an intermediary. The immediate source acts stably; the mediated production involves the soul’s mutable activity, so the derivative life is mutable in itself. Ficino then qualifies this through the Platonists’ account of life impressed on an ethereal vehicle as on an enduring mirror, as contrasted with life impressed on a perishable composite body, and defers further treatment. The report’s qualifications should remain attached to it. Immediate rational-soul creation and derivative animation are distinct causal questions.
Principal cause in growth. VII.8.1 places the distinction within a different operation. Heat can penetrate and dissolve food, but digestion must produce living flesh and the animal’s determinate figure. Growth also has a particular magnitude and limit, whereas heat spreads according to the material available. Ficino therefore denies that heat is the principal cause or principal craftsman of growth. The soul’s nutritive power directs heat as its instrument and specifies the ordered result. The chief agent of this bounded activity remains a created soul, itself dependent upon God. The contrast is soul and heat within nourishment and growth; it is not God and a rival first cause.
These claims belong to Ficino’s historical natural philosophy. Their explanatory structure can be described without presenting his physiology as contemporary biological evidence. The important lexical point is that an agent can be principal relative to an instrument while subordinate relative to the source of its own being. Conversely, calling God principal in an account does not automatically identify every other use of principalis with God.
Formal self-causation is not efficient self-creation. VIII.15 returns to mind’s reflexive activity. Ficino argues that mind forms and perfects itself through understanding and willing, and distinguishes the persistence of the knowing subject from the succession by which a natural kind continues in offspring. He mentions Proclus’s stronger claim that soul has its essence from itself, but ends the report by leaving that assertion to Proclus. The distancing phrase must not disappear from a summary.
VIII.15.3 gives the decisive limit: mind is its own cause formally, not efficiently. Its form and reflexive life account for the way in which its being is possessed and preserved; it is not its own creator. VIII.16.4 likewise insists that the enlargement by which mind extends beyond determinate bodily limits is implanted and preserved by God, rather than owned in complete independence. These late chapters reinforce the distinction established by V.523456789: an incorporeal soul can possess being and act through itself without becoming the first cause of itself.
Preservation and immortality. The causal analysis serves the volume’s central question. V.13.17 argues that the source needed for the soul to come to be is also sufficient for it to remain, and that God preserves through the same power by which he creates. An intervening bodily support cannot fail and separate soul from its preserver, because that is not the kind of dependence assigned to the soul’s essence. The passage allows the alternative of a soul that has a beginning yet no end. An argument for continuing existence therefore does not by itself establish that an individual soul has always existed. Nor does the soul’s immediate origin make soul and angel equal: V.13.16 differentiates the divine exemplars under which they are produced.
The safest reading sequence is consequently to ask four questions. What effect is being explained: being itself, a determinate bodily change, or the soul’s own formal activity? Which causal role is named: efficient, final, material or formal? Is the comparison between the universal source and subsequent causes, or between a principal agent and an instrument? Finally, is the dependence absolute or qualified in a particular respect? Keeping those questions separate removes much of the apparent conflict among first cause, principal cause, first principle and self-causation.
Places to read
- V.2.1Ficino specifies the rational-soul scope of the discussion and distinguishes irrational lives as images of souls.
- V.5.1–52345The four causes and the graduated uses of per se: soul retains efficient and final dependence although free from material dependence.
- V.10.1–323First cause, first principle and God name the same ultimate source; the conclusion joins soul’s stable relation to God through its own essence to continual reception of being.
- V.13.1–4234The reported Platonic disagreement, God as cause of being, determinate effects of other causes, and the sequence of first and subsequent gifts.
- V.13.5–1323456789Created production presupposes a foundation and limited operative power; strict creation does not.
- V.13.14–17234The proposed angelic instrument is rejected; immediate creation and preservation do not require beginningless existence.
- V.13.18The reported contrast between immediate rational soul and derivative irrational life preserves a place for natural mediation.
- VII.8.1Heat is denied the role of principal cause of growth; nutritive soul directs it as an instrument.
- VIII.15.2–32The Proclean self-production report is qualified, and formal self-causation is explicitly distinguished from efficient causation.
- VIII.16.4The mind’s enlarged power remains implanted and preserved by God.
Translation in this edition
The comparison-unit references are editorial divisions of the Diotimos edition. “First cause” and “first principle” in V.1023 follow causa prima and primum principium. “Principal cause” in VII.8.1 follows causa principali. The article’s English discussion of “primary cause” explains a possible reader’s confusion; it does not manufacture that phrase as a quotation from this volume.
The apparatus reports mutabiliter in V.10.2 against a later mirabiliter, so the relation of bodily effects is mutable, not merely wonderful. In V.10.3 it retains relatio perfectionis rather than the later ratio perfectionis, sustaining the passage’s emphasis on relation. These are the supplied edition’s witness reports; no new collation is claimed here. V.13.15–162 divides a single continuous objection across two anchors, so the units must be read together. VIII.15.3 supplies the explicit efficient/formal distinction that limits the preceding language of making and preserving oneself.
causa prima
causa prima. Printed forms: a prima sit causa; causam primam; prima rerum causa; primam causam.
First cause: the universal source on which the being of effects depends. V.1023 relates both bodies and soul to this source by different modes; V.1323456789101112131415161718 matches the first cause with the gift of being itself. The referent is God, not the earliest member of a temporal chain. References: V.10.1, V.13.4. See First Cause, principal causes and causal dependence.
causae sequentes
causae sequentes. Printed forms: sequentibus causis.
Subsequent causes, sources of further determinations within a dependent order. The printed wording attributes second or third gifts to subsequent causes after the first gift of being. “Secondary causes” is an explanatory label here, not this sentence’s exact Latin phrase. References: V.13.4. See First Cause, principal causes and causal dependence.
Deus
Deus. Printed forms: Dei; Deo; Deum; Deus.
God, the uncaused source of being, final end and continual preserver in Ficino's argument. Soul's self-subsistence does not make it independent of God; the four-cause analysis reserves complete causal exemption to God alone. References: V.5.1, V.10.1, V.10.3, V.13.17. See First Cause, principal causes and causal dependence.
non efficiens sed formalis
non efficiens sed formalis. Printed forms: formalis; non efficiens, sed.
Not efficient but formal: the expressly limited sense in which mind is called its own cause. Reflexive self-perfection and formal possession of being do not make mind its own efficient creator. The restriction governs the strong self-making language nearby. References: VIII.15.3. See First Cause, principal causes and causal dependence.
primum principium
primum principium. Printed forms: primum principium.
First principle, source or ground. In the argument of V.1023 this names the same divine source called the first cause; it does not introduce an additional entity. References: V.10.1, V.10.2. See First Cause, principal causes and causal dependence.
primus / prior
primus / prior. Printed forms: prima; primam; primum; primus; prius.
First or prior, which may mean causal or natural priority rather than earlier clock-time. The first actuality, first matter and first gift belong to different relations; the reader must retain the noun and argumentative scope. References: V.1.1, V.4.1, V.12.13, V.13.4. See First Cause, principal causes and causal dependence.
principalis / agens principale
principalis / agens principale. Printed forms: causa principali; principali agente; principalis agentis.
Principal or chief; a principal agent directs an operation in contrast to its instrument. Soul rather than heat determines the figure and limit of growth. The creative-instrument proposal in V.1323456789101112131415161718 is rejected because an instrument acts upon a subject through motion and time. A principal agent in one operation need not be the first cause of all being. References: V.13.14, VII.8.1. See First Cause, principal causes and causal dependence.
Proclus (authorities and interlocutors)
Proclus. Ficino reports Proclus in several settings, including angelic soul-production, the dispute over irrational immortality and a tentative analysis of being. VIII.15.2 explicitly leaves the stronger thesis of essential self-production to Proclus; VIII.15.3 retains formal self-causation rather than efficient self-creation. References: V.13.1, V.14.8, VIII.4.12, VIII.15.2, VIII.15.3. See Divine production and the third essence; Platonist disagreement and descent; Analysis, mangling, and fictive construction; Self-causation: formal cause and efficient cause; First Cause, principal causes and causal dependence.