From the book
The Summary of Physics Restored
Attributed to Jean d’Espagnet · Diotimos Editions · 2026
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At a Glance
- The wordVita is life; mors, death. Their decisive definition concerns the union and separation of matter and form, rather than the simple presence or absence of visible movement.
- In the bookLife is a harmonious actuality of an individual and, later, a continuous harmony of actions. Death ends that individual union without stopping all natural activity or annihilating every constituent.
- In this editionThe edition renders actus as “actuality” in the definitions. “Harmonious” belongs to the relation of constituents and activities, not merely to an agreeable sensation.
- A place to readCanons 183–187 distinguish the dissolution of a completed compound from the moderate corruption through which a seed becomes a new living thing.
Meaning
Vita names the achieved living condition of a mixed body; mors names its end. The phrase actus harmonicus makes life an actuality proceeding from an ordered conjunction. The definition is not a list of observable symptoms: it locates living being in the relation of matter and form. Conversely, mixti resolutio is the dissolution of the compound as a compound. It need not mean that the visible body instantly falls apart. Later uses make this last distinction particularly important.
Use in the book
The early framework already gives life and death a place within an ordered material history. In canon 8 they occupy the last volume's outer margins, while intervening processes move towards one or the other. Canon 10 restricts the alternation of generation and corruption to the lowest region and calls its spiritual benefits a loan from Heaven. These passages should precede the more compressed formula of canon 178, which names light and darkness the principles of life and death. The formula concerns the author's contrast between luminous forms and dark bodies; it does not independently explain every instance of dying.
Canons 181–184 supply the sequence. Conception, birth, life, and death have appointed times within created Nature, although the Creator establishes rather than suffers the law of necessity. When things perish, their constituent natures return to the universal mass and their proper regions. The tentative suggestion that this might explain Pythagorean transmigration belongs to canon 182; it is not a declaration that a deceased individual returns unchanged. In canon 183 the ethereal nature withdraws from a ruined compound and the elements lose their ruler. Corruption can then prepare another formation, but this is a new mixed body.
The immediately following exception matters. In moderate, generative corruption the inborn spirit does not withdraw: the specific form remains potentially present in seed or matter, and external heat awakens it. The author therefore uses corruption for processes with different relations to a formative principle. Canon 185 compares generation and nourishment because both begin with a resolution into moist material, while canon 186 distinguishes the corruptible capsule from the invisible generating seed. Neither passage makes every decay a completed death of the same kind.
Canon 187 gathers the account: life perfects the being of an individual through the union of matter and form; death terminates that actuality through their separation. Canon 193 gives the striking illustration of a corpse that remains whole and uninjured after Nature's fire and life have withdrawn. Material integrity alone is not the intact living compound. Canon 208 then expands the definition positively. Life is a continuous actuality differentiated into many actions, proceeding from a spiritual source through bodily organs. The body is necessary as the place of unfolding, even though the source of activity is assigned to spirit.
Finally, canon 232 denies that death is absolute natural inactivity. Corpses undergo corruption, just as sleeping organisms continue inward operations without necessarily changing place. This is a theory of life within a wider theory of action. Its account of elemental disorder and disease in 229–230 is historical physiology, not a method for deciding whether a present person is alive or for treating illness.
Places to read
- Canon 8; 1653, p. 5LatinLife and death as the limits of the lowest sequence of natural changes.
- Canon 10; 1653, pp. 6, 7LatinLife borrowed from Heaven; generation and corruption in the subcelestial region.
- Canon 178; 1653, p. 127LatinThe strong light–life and darkness–death formula.
- Canon 181; 1653, pp. 129, 130LatinAppointed spans, with divine exemption from created necessity.
- Canon 182; 1653, pp. 130, 131LatinReturn of constituent natures; a tentative reading of transmigration.
- Canon 183; 1653, pp. 131, 132LatinThe departure of the ruler and preparation of a new compound.
- Canon 184; 1653, p. 132LatinGenerative corruption preserves the potential specific form.
- Canon 185; 1653, pp. 132, 133LatinGeneration and nourishment compared through moist resolution.
- Canon 186; 1653, pp. 133, 134LatinThe corruptible capsule distinguished from the invisible generating principle.
- Canon 187; 1653, p. 134LatinFormal definition of life and death.
- Canon 193; 1653, p. 138LatinAn intact corpse can cease to be a living compound.
- Canon 208; 1653, p. 151LatinLife redescribed as a continuous harmony of actions.
- Canon 229; 1653, pp. 166, 167LatinDisordered proportion weakens the living union.
- Canon 230; 1653, p. 167LatinInternal and external causes of the discord are distinguished.
- Canon 232; 1653, pp. 168, 169LatinCorruption remains activity after death.
Translation in this edition
“Actuality” translates actus in canon 187 and avoids reducing the phrase to one isolated deed. In canon 208 the singular actus continuus is distinguished from the plural actionum: the continuing living actuality unfolds in many actions. “Perfected being” belongs to esse perfectum, not to a moral evaluation of the individual. “Dissolution” renders resolutio. The modern annotation on canon 182 explicitly preserves forsan, “perhaps”; the proposed explanation of metempsycosis remains the author's conjecture, not verified testimony about Pythagorean doctrine.
Perfected being — esse perfectum
Perfected being: the achieved existence of the individual through living union. — Canon 187; 1653, p. 134.
Union — copulâ
Union, the conjunction from which the living actuality proceeds. — Canon 187; 1653, p. 134.
Limit of life — terminus
Limit: death bounds and ends that actuality. — Canon 187; 1653, p. 134.
Separation — separatio
Separation of matter and form, not necessarily immediate disintegration of the corpse. — Canon 187; 1653, p. 134.
Dissolution — resolutio
Dissolution of the mixed body as an organised compound. — Canon 187; 1653, p. 134.
Generative corruption — generatiuâ
Generative corruption, distinguished from the departure of form at death. — Canon 184; 1653, p. 132.
Inborn spirit — spiritus innatus
The inborn spirit that remains during moderate generative corruption. — Canon 184; 1653, p. 132.
Corpse — cadauer
Corpse: the elemental body can remain whole after life withdraws. — Canon 193; 1653, p. 138.
Continuous actuality — actus continuus
Continuous actuality, the sustained living condition differentiated into activities. — Canon 208; 1653, p. 151.
Movement of corruption — motum corruptionis
Movement of corruption, showing that a dead body is not naturally inactive. — Canon 232; 1653, pp. 168, 169.