Quote by Edmund Burke

“Fear or terror, which is an apprehension of pain or death, exhibits exactly the same effects, approaching in violence to those just mentioned, in proportion to the nearness of the cause, and the weakness of the subject. [...] From hence I conclude, that pain and fear act upon the same parts of the body, and in the same manner, though somewhat differing in degree: that pain and fear consist in an unnatural tension of the nerves; that this is sometimes accompanied with an unnatural strength, which sometimes suddenly changes into an extraordinary weakness; that these effects often come on alternately, and are sometimes mixed with each other. This is the nature of all convulsive agitations, especially in weaker subjects, which are the most liable to the severest impressions of pain and fear. The only difference between pain and terror is, that things which cause pain operate on the mind by the intervention of the body; whereas things that cause terror generally affect the bodily organs by the operation of the mind suggesting the danger; but both agreeing, either primarily or secondarily, in producing a tension, contraction, or violent emotion of the nerves, they agree likewise in everything else.”