MAGNITUDE, n. Size. Magnitude being purely relative,

MAGNITUDE, n. Size. Magnitude being purely relative, nothing is
large and nothing small. If everything in the universe were increased
in bulk one thousand diameters nothing would be any larger than it was
before, but if one thing remain unchanged all the others would be
larger than they had been. To an understanding familiar with the
relativity of magnitude and distance the spaces and masses of the
astronomer would be no more impressive than those of the microscopist.
For anything we know to the contrary, the visible universe may be a
small part of an atom, with its component ions, floating in the life-
fluid (luminiferous ether) of some animal. Possibly the wee creatures
peopling the corpuscles of our own blood are overcome with the proper
emotion when contemplating the unthinkable distance from one of these
to another.
-- Ambrose Bierce, "The Devil's Dictionary"