There were other utterances which just as frankly acknowledged that, having produced surplus population, Germany proposed to procure by means of war the expansion necessary to care for it. Adelyne More, in "Uncontrolled Breeding," a study of the birth rate in its relation to war, quoted the Berliner Post: "Can a great and rapidly growing nation like Germany always renounce all claims to further development or to the expansion of its political power? The final settlement with France and England, the expansion of our colonial possessions, in order to create new German homes for the overflow of our population—these are problems which must be faced in the near future." This was published in 1913.

Just as frank was the recognition of the true cause of international conflicts by a number of British authorities.

In "Uncontrolled Breeding," the author quotes the British National Commission's report on The Declining Birth Rate: "The pressure of population in any country brings, as a chief historic consequence, overflows and migrations not only for peaceful settlement, but for conquest and for the subjugation and exploitation of weaker peoples. This always remains a chief cause of international disputes."

The militaristic claim for Germany's right to new territory was simply a claim to the right of life and food for the German babies—the same right that a chick claims to burst its shell. If there had not been other millions of people claiming the same right, there would have been no war. But there were other millions.

The German rulers and leaders pointed out the fact that expansion meant more business for German merchants, more work for German workmen at better wages, and more opportunities for Germans abroad. They also pointed out that lack of expansion meant crowding and crushing at home, hard times, heavy burdens, lack of opportunity for Germans, and what not. In this way, they gave the people of the Empire a startling and true picture of what would happen from overcrowding. Once they realized the facts, the majority of Germans naturally welcomed the so-called war of defense.

The argument was sound. Once the German mothers had submitted to the plea for overbreeding, it was inevitable that imperialistic Germany should make war. Once the battalions of unwanted babies came into existence—babies whom the mothers did not want but which they bore as a "patriotic duty"—it was too late to avoid international conflict. The great crime of imperialistic Germany was its high birth rate.

It has always been so. Behind all war has been the pressure of population. "Historians," says Huxley, "point to the greed and ambition of rulers, the reckless turbulence of the ruled, to the debasing effects of wealth and luxury, and to the devastating wars which have formed a great part of the occupation of mankind, as the causes of the decay of states and the foundering of old civilizations, and thereby point their story with a moral. But beneath all this superficial turmoil lay the deep-seated impulse given by unlimited multiplication."

Robert Thomas Malthus, formulator of the doctrine which bears his name, pointed out, in the closing years of the eighteenth century, the relation of overpopulation to war. He showed that mankind tends to increase faster than the food supply. He demonstrated that were it not for the more common diseases, for plague, famine, floods and wars, human beings would crowd each other to such an extent that the misery would be even greater than it now is. These he described as "natural checks," pointing out that as long as no other checks are employed, such disasters are unavoidable. If we do not exercise sufficient judgment to regulate the birth rate, we encounter disease, starvation and war.

Both Darwin and John Stuart Mill recognized, by inference at least, the fact that so-called "natural checks"—and among them war—will operate if some sort of limitation is not employed. In his Origin of Species, Darwin says: "There is no exception to the rule that every organic being naturally increases at so high a rate, if not destroyed, that the earth would soon be covered by the progeny of a single pair." Elsewhere he observes that we do not permit helpless human beings to die off, but we create philanthropies and charities, build asylums and hospitals and keep the medical profession busy preserving those who could not otherwise survive. John Stuart Mill, supporting the views of Malthus, speaks to exactly the same effect in regard to the multiplying power of organic beings, among them humanity. In other words, let countries become overpopulated and war is inevitable. It follows as daylight follows the sunrise.

When Charles Bradlaugh and Mrs. Annie Besant were on trial in England in 1877 for publishing information concerning contraceptives, Mrs. Besant put the case bluntly to the court and the jury: