『エチカ』、第I部、定理16
From the necessity of the divine nature must follow an infinite number of things in infinite ways--that is, all things which can fall within the sphere of infinite intellect.
証明
This proposition will be clear to everyone, who remembers that from the given definition of any thing the intellect infers several properties, which really necessarily follow therefrom (that is, from the actual essence of the thing defined); and it infers more properties in proportion as the definition of the thing expresses more reality, that is, in proportion as the essence of the thing defined involves more reality. Now, as the divine nature has absolutely infinite attributes (by Def. vi.), of which each expresses infinite essence after its kind, it follows that from the necessity of its nature an infinite number of things (that is, everything which can fall within the sphere of an infinite intellect) must necessarily follow. Q.E.D.
系1
Hence it follows, that God is the efficient cause of all that can fall within the sphere of an infinite intellect.
系2
It also follows that God is a cause in himself, and not through an accident of his nature.
系3
It follows, thirdly, that God is the absolutely first cause.
Benedict de Spinoza, The Ethics (Ethica Ordine Geometrico Demonstrata), R. H. M. Elwesによるラテン語からの翻訳.
The Chief Works of Benedict de Spinoza、第II巻（London：George Bell and Sons、1884年）に初めて刊行されました。
この翻訳は、1884年に出版された米国では著作権の保護期間を過ぎており、保護期間が著作者の生存期間に100年を加えた期間以下であるすべての地域でも同様です。翻訳者は1892年に亡くなりました。
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