University of Virginia Library

Testimony of the senses

The optical focus is another proof of the illusion of material sense. On the eye's retina, sky and tree-tops apparently join hands, clouds and ocean meet and mingle. The barometer, - that little prophet of storm and sunshine, denying the testimony of the senses, - points to fair weather in the midst of murky clouds and drenching rain. Experience is full of instances of similar illusions, which every thinker can recall for himself.