Pierre understood the stubborn blindness of such insanity; and he felt utterly upset by the fear that he should be unable to overcome it. "You are mad, brother!" he exclaimed, "they have driven you mad! It is a gust of violence passing; they were treated in a wrong way and too relentlessly at the outset, and now that they are avenging one another, it may be that blood will never cease to flow. . . . But, listen, brother, throw off that nightmare. You can't be a Salvat who murders or a Bergaz who steals! Remember the pillage of the Princess's house and remember the fair-haired, pretty child whom we saw lying yonder, ripped open. . . . You do not, you cannot belong to that set, brother--" With a wave of his hand, Guillaume brushed these vain reasons aside. Of what consequence were a few lives, his own included? No change had ever taken place in the world without millions and millions of existences being stamped out. "But you had a great scheme in hand," cried Pierre, hoping to save him by reviving his sense of duty. "It isn't allowable for you to go off like this." Then he fervently strove to awaken his brother's scientific pride. He spoke to him of his secret, of that great engine of warfare, which could destroy armies and reduce cities to dust, and which he had intended to offer to France, so that on emerging victorious from the approaching war, she might afterwards become the deliverer of the world. And it was this grand scheme that he had abandoned, preferring to employ his explosive in killing innocent people and overthrowing a church, which would be built afresh, whatever the cost, and become a sanctuary of martyrs! Guillaume smiled. "I have not relinquished my scheme," said he, "I have simply modified it. Did I not tell you of my doubts, my anxious perplexity? Ah! to believe that one holds the destiny of the world in one's grasp, and to tremble and hesitate and wonder if the intelligence and wisdom, that are needful for things to take the one wise course, will be forthcoming! At sight of all the stains upon our great Paris, all the errors and transgressions which we lately witnessed, I shuddered. I asked myself if Paris were sufficiently calm and pure for one to entrust her with omnipotence. How terrible would be the disaster if such an invention as mine should fall into the hands of a demented nation, possibly a dictator, some man of conquest, who would simply employ it to terrorize other nations and reduce them to slavery. . . . Ah! no, I do not wish to perpetuate warfare, I wish to kill it."