Section 181

XLIV. (181) And that is not the least influential cause of the instability of one's perceptions which arises from the position of the objects, from their distance, and from the places by which they are each of them surrounded. (182) Do we not see that the fishes in the sea, when they stretch out their fins and swim about, do always appear larger than their real natural size? And oars too, even though they are very straight, look as if they were broken when they are under water; and things at a great distance display false appearances to our eyes, and in this way do frequently deceive the mind. (183) For at times inanimate objects have been imagined to be alive, and on the contrary living animals have been considered to be lifeless; sometimes again stationary things appear to be in motion, and things in motion appear to be standing still: even things which are approaching towards us do sometimes appear to be retreating from us, and things which are going away do on the other hand appear to be approaching. At times very short things seem to be exceedingly long, and things which have many angles appear to be circular. There is also an infinite number of other things of which a false impression is given though they are open to the sight, which however no man in his senses would subscribe to as certain.