The simple truth of the matter is this: A mighty problem--a planet-wide problem--confronts us to-day and will increasingly confront us in the days to come. Says Putnam Weale: "A struggle has begun between the white man and all the other men of the world to decide whether non-white men--that is, yellow men, or brown men, or black men--may or may not invade the white man's countries in order there to gain their livelihood. The standard of living being low in the lands of colored men and high in the lands of the white man, it has naturally followed that it has been in the highest degree attractive for men of color during the past few decades to proceed to regions where their labor is rewarded on a scale far above their actual requirements--that is, on the white man's scale. This simple economic truth creates the inevitable contest which has for years filled all the countries bordering on the Pacific with great dread; and which, in spite of the temporary truce which the so-called 'Exclusion Policy' has now enforced, will go much farther than it has yet gone."[159] The world-wide significance of colored immigration and the momentous conflicts which it will probably provoke are ably visualized by Professor Ross. "The rush of developments," he writes, "makes it certain that the vision of a globe 'lapped in universal law' is premature. If the seers of the mid-century who looked for the speedy triumph of free trade had read their Malthus aright, they might have anticipated the tariff barriers that have arisen on all hands within the last thirty years. So, to-day one needs no prophet's mantle to foresee that presently the world will be cut up with immigration barriers which will never be levelled until the intelligent accommodation of numbers to resources has greatly equalized population-pressure all over the globe.... Dams against the color races, with spillways of course for students, merchants, and travellers, will presently enclose the white man's world. Within this area minor dams will protect the high wages of the less prolific peoples against the surplus labor of the more prolific. "Assuredly, every small-family nation will try to raise such a dam, and every big-family nation will try to break it down. The outlook for peace and disarmament is, therefore, far from bright. One needs but compare the population-pressures in France, Germany, Russia, and Japan to realize that, even to-day, the real enemy of the dove of peace is not the eagle of pride or the vulture of greed, but the stork!