Octave Mirbeau said this quote

I understood that the law of the world was strife; an inexorable, murderous law, which was not content with arming nation against nation but which hurled against one another the children of the same race, the same family, the same womb. I found none of the lofty abstractions of honor, justice, charity, patriotism of which our standard books are so full, on which we are brought up, with which we are lulled to sleep, through which they hypnotize us in order the better to deceive the kind little folk, to enslave them the more easily, to butcher them the more foully.