"Reader, when any creature inspires you with this instinctive, unreasoning abhorrence, avoid that creature. He is dangerous. Take warning, as you take warning by the clouds in the sky and the ominous stillness of the atmosphere when there is a storm coming. Nature can not lie; and it is nature which has planted that shuddering terror in your breast; an instinct of self-preservation rather than of cowardly fear, which at the first sight of some fellow-creature tells you more plainly than words can speak, "That man is my enemy!""