“To us, who are nourished from childhood on the truths revealed by science, the sky is known to be merely an optical appearance due to the partial absorption of the solar rays in passing through a thick stratum of atmospheric air; the clouds are known to be large masses of watery vapour, which descend in rain-drops when sufficiently condensed; and the lightning is known to be a flash of light accompanying an electric discharge. But these conceptions are extremely recondite, and have been attained only through centuries of philosophizing and after careful observation and laborious experiment. To the untaught mind of a child or of an uncivilized man, it seems far more natural and plausible to regard the sky as a solid dome of blue crystal, the clouds as snowy mountains, or perhaps even as giants or angels, the lightning as a flashing dart or a fiery serpent.”
15x21 cm, 246 pgs