XLI
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I pass on now to the kind of lightning that stains objects struck by it. The staining is either discolouring or colouring, between which I draw a distinction. When the colour is spoiled, without being changed, there is discolouring. On the contrary, there is colouring when the aspect of an object becomes different in kind from what it was, for example, when it turns dark blue or black or pale. So far the Etruscans and the philosophers are in agreement. But disagreement begins when the former go on to assert that lightning is sent by Jupiter, to whom they assign three species of bolt. The first, according to their statement, gives a peaceful warning, being sent by Jove’s own counsel. The second is, it is true, sent also by him, but by advice of his council, to which he summons the twelve gods as assessors. This bolt is no doubt beneficial, but not without doing damage to some extent. The third kind of bolt is still of Jove’s sending, but he summons into council the so-called supreme veiled gods. This bolt causes destruction of what it encounters, and in particular it changes the existing condition of private and public affairs that it finds. For fire allows nothing to remain as it is.