The jackal seeks to pounce upon the lizard, and so inspires terror in the lizard; but when you watch the jackal you find that it exhibits terror toward more powerful foes. You find that the hawk, which swoops upon the lizard, is equally quick to swoop away when it comes upon a man with a gun. This preying and being preyed upon, this mixture of cruelty and terror, is a conspicuous fact of nature; if you go into any orthodox school or college in America today, you will be taught that it is nature's most fundamental law, and governs all living things. If you should take a course in political economy under a respectable professor, you would find him explaining that such cruelty-terror applies equally in human affairs; it is the basis of all economic science, and the effort to escape from it is like the effort to lift yourself by your boot-straps. The professor calls this cruelty-terror by the name "competition"; and he creates for his own purposes an abstract being whom he names "the economic man," a creature who acts according to this law, and exists under these conditions. One of the professor's formulas is the so-called "Malthusian law," that population presses always upon the limits of subsistence. Another is "the law of diminishing returns of agriculture," that you can get only so much product out of a certain piece of land, no matter how much labor and capital you put into it. Another is Ricardo's "iron law of wages," that wages cannot rise above the cost of living. Another is embodied in the formula of Adam Smith, that "Competition is the life of trade." The professor enunciates these "laws," coldly and impersonally, as becomes the scientist; but if you go into the world of business, you find them set forth cynically, in scores of maxims and witticisms: "Dog eat dog," "the devil take the hindmost," "business is business," "do others or they will do you."