“I should just say so! You will find Napoleon not attacking when all the rules ordered him to attack, but some obscure divination warned him not to. For instance, look at Austerlitz, or in 1806 take his instructions to Lannes. But you will find certain generals slavishly imitating one of Napoleon’s movements and arriving at a diametrically opposite result. There are a dozen examples of that in 1870. But even for the interpretation of what the enemy may do, what he actually does is only a symptom which may mean any number of different things. Each of them has an equal chance of being the right thing, if one looks only to reasoning and science, just as in certain difficult cases all the medical science in the world will be powerless to decide whether the invisible tumour is malignant or not, whether or not the operation ought to be performed. It is his instinct, his divination⁠—like Mme.