Book 5 — 444.
J. M. (John McFarland) Kennedy translation
Surprise at Resistance.—Because we have reached the point of being able to see through a thing we believe that henceforth it can offer us no further resistance—and then we are surprised to find that we can see through it and yet cannot penetrate [pg 320] through it. This is the same kind of foolishness and surprise as that of the fly on a pane of glass.