Man, if he compare himself with all that he can see, is at the zenith of power; but if he compare himself with all that he can conceive, he is at the nadir of weakness.
Charles Caleb COLTON (1849). “L.P.”, p.421

Man, if he compare himself with all that he can see, is at the zenith of power; but if he compare himself with all that he can conceive, he is at the nadir of weakness.