20 Aug. 1813

Logic

Ch. Language

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In addition to the notion /idea/ of motion, in the ideas of action and passion the notion of causation or causality is involved /superadded/. The body F is in motion: of that /such/ motion what is the cause ? Answer - the action of another body, the body S, which by the exercise exertion influence or correspondent power which it has /possesses/ becomes productive of that effect.

In themselves, the two fictitious entities Action and Passion are not only correspondent but inseparable. No action without passion: no passion without action: no action on the one part without passion on the other.

In the case of action and thereupon on the part of one of two bodies - motion - sensible /perceptible/ motion, on the part of the other body is relative motion, in every instance a never failing consequence ? To judge from analogy the probability seems to be in the affirmative.

Where /In so far as/ on the part of one of the two alone any motion is perceptible on the part of the other no motion being perceptible, the one of which the motion is perceptible, is most commonly spoken of as the agent, the other as the patient: a state of motion is the state in which the former is said to be in, a state of passion, the state in which the other is said to be in.

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