Upon the different complexions and constitutions of men That seems bitter to one, which is sweet to another.

Upon the difference of their external situation and position: Colours reflected from the clouds change according to the distance of the clouds, and according to the angle they make with the eye and luminous body.

Fire also communicates the sensation of pleasure at one distance, and that of pain at another.
Instances of this kind are very numerous and frequent.
The conclusion drawn from them, is likewise as satisfactory as can possibly be imagined.

It is certain, that when different impressions of the same sense arise from any object, every one of these impressions has not a resembling quality existent in the object.

For as the same object cannot, at the same time, be endowed with different qualities of the same sense, and as the same quality cannot resemble impressions entirely different; it evidently follows, that many of our impressions have no external model or archetype.