of them once without knowing what had become of this express. 'I do not wish,' he added, 'to lose the most precious thing in the world: my Reason.'
"'And when did this happen?' said I. 'For, as a matter of fact, I have heard nothing of the disappearance of an express; and it ought to be generally known.'
"'It must be known by now,' he, said in a very melancholy tone. 'It only happened a few hours before our fall into the Catacombs.'
"I examined the paper once more for quite five minutes. I reflected deeply, asked for certain complementary details, and then burst out laughing: though in truth it was not a laughable matter, for the catastrophe was truly appalling. What made me laugh was the seeming difficulty of the problem and the delight of having solved it in five minutes.
"'You believe yourself a rational human being,' I cried, 'because you have Reason! But you 're exactly like ninety-nine people out of a hundred, you don't know how to make use of it. You talk of Reason; but what use is Reason in a brain which does not know by which end to take hold of it? It's a wonderful instrument in the hands of a doll! Don't turn away your head in that sulky way, M.
