"Caesar, De Bello Gallico, liber septimus, capitulum quinquaginta sex, wrote:Quibus rebus cognitis Caesar maturandum sibi censuit, si esset in perficiendis pontibus periclitandum, ut prius quam essent maiores eo coactae copiae dimicaret. Nam ut commutato consilio iter in provinciam converteret, id ne metu quidem necessario faciendum existimabat; cum infamia atque indignitas rei et oppositus mons Cevenna viarumque difficultas impediebat, tum maxime quod abiuncto Labieno atque eis legionibus quas una miserat vehementer timebat. Itaque admodum magnis diurnis nocturnisque itineribus confectis contra omnium opinionem ad Ligerem venit vadoque per equites invento pro rei necessitate opportuno, ut brachia modo atque humeri ad sustinenda arma liberi ab aqua esse possent, disposito equitatu qui vim fluminis refringeret, atque hostibus primo aspectu perturbatis, incolumem exercitum traduxit frumentumque in agris et pecoris copiam nactus repleto his rebus exercitu iter in Senones facere instituit
http://classics.mit.edu/Caesar/gallic.7.7.html wrote:Caesar on being informed of these movements was of opinion that he ought to make haste, even if he should run some risk in completing the bridges, in order that he might engage before greater forces of the enemy should be collected in that place. For no one even then considered it an absolutely necessary act, that changing his design he should direct his march into the Province, both because the infamy and disgrace of the thing, and the intervening mount Cevennes, and the difficulty of the roads prevented him; and especially because he had serious apprehensions for the safety of Labienus whom he had detached, and those legions whom he had sent with him. Therefore, having made very long marches by day and night, he came to the river Loire, contrary to the expectation of all; and having by means of the cavalry, found out a ford, suitable enough considering the emergency, of such depth that their arms and shoulders could be above water for supporting their accoutrements, he dispersed his cavalry in such a manner as to break the force of the current, and having confounded the enemy at the first sight, led his army across the river in safety; and finding corn and cattle in the fields, after refreshing his army with them, he determined to march into the country of the Senones.
. It would be completely unexpected // Undiquè improvisa sit res."When Caesar learned these things he figured that, if constructing bridges had to [necessarily] put him in peril, he should [instead] hurry to engage before the forces gathered there were greater. For he was thinking that, should he in a change of plan alter his route into the province, it wasn't something that fear would make someone do necessarily, when the shame and indignity of it, Mount Cevennes opposite, and the bad roads were preventing him, and especially because he was greatly fearing for Labienus who had been detached and for those legions he had sent along with him."