There is no object so large but that at a great distance from the eye it does not appear smaller than a smaller object near.
The smallest units of matter are not physical objects in the ordinary sense; they are forms, ideas which can be expressed unambiguously only in mathematical language.
The eye — which sees all objects reversed — retains the images for some time.
Between two absolutely different spheres, as between subject and object, there is no causality, no correctness, and no expression; there is, at most, an aesthetic relation.