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Baruch Spinoza
Ethics, Émile Saisset’s French Translation Section section-0064
Section 64 of 300
Canonical reference section-0064
French
Émile Saisset or Paul Janet
Si un certain nombre de corps composant un individu sont forcés de changer la direction de leur mouvement, de telle façon pourtant qu’ils puissent continuer ce mouvement et se le communiquer les uns aux autres suivant les mêmes rapports qu’auparavant, l’individu conservera encore sa nature, sans que sa forme éprouve aucun changement.
Démonstration : Cela est évident de soi, puisque l’individu en question conserve par hypothèse tout ce qui, d’après sa définition, constitue sa forme.
L’individu, ainsi composé, retiendra encore sa nature, qu’il se meuve dans toutes ses parties ou qu’il reste en repos, que son mouvement ait telle direction ou telle autre, pourvu que chaque partie garde son mouvement et le communique aux autres de la même façon qu’auparavant.
Démonstration : Cela est évident par la définition même de l’individu. Voir ce qui précède le Lemme 4.
English AI-generated translation, non-official
Codex gpt-5.6-sol · Non-official working translation · 2026-09-11
If a number of bodies composing an individual are compelled to change the direction of their motion, but in such a way that they can continue that motion and communicate it to one another according to the same ratios as before, the individual will still retain its nature, without any change in its form.
Demonstration: This is self-evident, since by hypothesis the individual in question retains everything that, according to its definition, constitutes its form.
The individual thus composed will still retain its nature, whether it moves in all its parts or remains at rest, and whether its motion has one direction or another, provided that each part retains its motion and communicates it to the others in the same way as before.
Demonstration: This is evident from the very definition of an individual. See what precedes Lemma 4.
Concepts in this passage
Adequate idea
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Affects
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Anger
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Attribute
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Conatus
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Family
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Freedom
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Intellectual love of God
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Mode
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Nature
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Necessity
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Power to act
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Reason
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Service
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Substance
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