force which is discharged from on high With such stupendous power; but if 'tis not Upon its course already kindled with fire, It yet arriveth warmed and mixed with heat.
And, now, the speed and stroke of thunderbolt Is so tremendous, and with glide so swift Those thunderbolts rush on and down, because Their roused force itself collects itself First always in the clouds, and then prepares For the huge effort of their going-forth; Next, when the cloud no longer can retain The increment of their fierce impetus, Their force is pressed out, and therefore flies With impetus so wondrous, like to shots Hurled from the powerful Roman catapults. Note, too, this force consists of elements Both small and smooth, nor is there aught that can With ease resist such nature. For it darts Between and enters through the pores of things; And so it never falters in delay Despite innumerable collisions, but Flies shooting onward with a swift elan. Next, since by nature always every weight Bears downward, doubled is the swiftness then And that elan is still more wild and dread, When, verily, to weight are added blows, So that more madly and more fiercely then The thunderbolt shakes into shivers all That blocks its path, following on its way. Then, too, because it comes along, along With one continuing elan, it must Take on velocity anew, anew, Which still increases as it goes, and ever Augments the bolt's vast powers and to the blow Gives larger vigour; for it forces all, All of the thunder's seeds of fire, to sweep In a straight line unto one place, as 'twere,-- Casting them one by other, as they roll, Into that onward course. Again, perchance, In coming along, it pulls from out the air Some certain bodies, which by their own blows Enkindle its velocity. And, lo, It comes through objects leaving them unharmed, It goes through many things and leaves them whole, Because the liquid fire flieth along Athrough their pores. And much it does transfix, When these primordial atoms of the bolt Have fallen upon the atoms of these things Precisely where the intertwined atoms Are held together. And, further, easily Brass it unbinds and quickly fuseth gold, Because its force is so minutely made Of tiny parts and elements so smooth That easily they wind their way within, And, when once in, quickly unbind all knots And loosen all the bonds of union there.
And most in autumn is shaken the house of heaven, The house so studded with the glittering stars, And the whole earth around--most too in spring When flowery times unfold themselves: for, lo, In the cold season is there lack of fire, And winds are scanty in the hot, and clouds Have not so dense a bulk. But when, indeed, The seasons of heaven are betwixt these twain, The divers causes of the thunderbolt Then all concur; for then both cold and heat Are mixed in the cross-seas of the year, So that a discord rises among things And air in vast tumultuosity Billows, infuriate with the fires and winds-- Of which the both are needed by the cloud For fabrication of the thunderbolt. For the first part of heat and last of cold Is the time of spring; wherefore must things unlike Do battle one with other, and, when mixed, Tumultuously rage. And when rolls round The latest heat mixed with the earliest chill-- The time which bears the name of autumn--then Likewise fierce cold-spells wrestle with fierce heats. On this account these seasons of the year Are nominated "cross-seas."--And no marvel If in those times the thunderbolts prevail And storms are roused turbulent in heaven, Since then both sides in dubious warfare rage Tumultuously, the one with flames, the other With winds and with waters mixed with winds.