The force whereby a man persists in existing is limited, and is infinitely surpassed by the power of external causes.
 Baruch Spinoza, Ethics (1677). copy citation

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Author Baruch Spinoza
Source Ethics
Topic power force
Date 1677
Language English
Reference
Note Translated by R. H. M. Elwes
Weblink http://www.gutenberg.org/files/3800/3800-h/3800-h.htm

Context

“, something which cannot be deduced solely from the laws of our nature. We are passive therefore, in so far as we are a part of Nature, which cannot be conceived by itself without other parts. Q.E.D. PROP. III. The force whereby a man persists in existing is limited, and is infinitely surpassed by the power of external causes. Proof.—This is evident from the axiom of this part. For, when man is given, there is something else—say A—more powerful; when A is given, there is something else—say B—more powerful than A, and so on to infinity;” source