E3D3
Definition — Part III
Latin
English (Elwes 1883)
By emotion I mean the modifications of the body, whereby the active power of the said body is increased or diminished, aided or constrained, and also the ideas of such modifications.
N.B. If we can be the adequate cause of any of these modifications, I then call the emotion an activity, otherwise I call it a passion, or state wherein the mind is passive.
Modern English
By affect I understand the affections of the body by which the body's power of acting is increased or diminished, aided or restrained, and at the same time the ideas of those affections.
When we can be the adequate cause of any one of these affections, I call the affect an action; otherwise I call it a passion.