Book 23
5.13
Upon seeing this, Julian again called in the interpreters of omens, and on being questioned they declared emphatically that this sign also forbade the expedition, pointing out that the thunderbolt was of the advisory kind;On this kind of thunderbolt see Seneca, Nat. Quaest. ii. 39, 1 ff. for so those are called which either recommend or dissuade any act. And so much the more was it necessary to guard against this one. because it killed a soldier of lofty nameSince Jovianus is connected with Jupiter. as well as war-horses, and because places which were struck in that manner—so the books on lightningThese prescribed the rites and taboos connected with thunderbolts. The expression libri fulgurales seems to occur only here and in Cic., Div. i. 33, 72, where we have haruspicini et fulgurales et rituales libri. declare— must neither be looked upon nor trodden.
5.14
The philosophers, on the other hand, maintained that the brilliance of the sacred fire which suddenly appeared signified nothing at all, but was merely the course of a stronger mass of air sent downward from the aether by some force; or if it did give any sign, it foretold an increase in renown for the emperor, as he was beginning a glorious enterprise, since it is well known that flames by their very nature mount on high without opposition.