Let us see what progress means. It is a term which covers several quite different things.
There is material progress, by which I understand an increase in wealth, that is, in the commodities useful to man, which give him health, strength, and longer life, and make his life easier, providing more comfort and more leisure, and thus enabling him to be more physically efficient, and to escape from that pressure of want which hampers the development of his whole nature.
There is intellectual progress—an increase in knowledge, a greater abundance of ideas, the training to think, and to think correctly, the growth in capacity for dealing with practical problems, the cultivation of the power to enjoy the exercise of thought and the pleasures of letters and art.
There is moral progress—a thing harder to define, but which includes the development of those emotions and habits which make for happiness—contentment and tranquility of mind; the absence of the more purely animal and therefore degrading vices (such as intemperance and sensuality in all its other forms); the control of the violent passions; good will and kindliness toward others—all the things which fall within the philosophical conception of a life guided by right reason. People have different ideas of what constitutes happiness and virtue, but these things are at any rate included in every such conception.
A further preliminary question arises. Is human progress to be estimated in respect to the point to which it raises the few who have high mental gifts and the opportunity of obtaining an education fitting them for intellectual enjoyment and intellectual vocations, or is it to be measured by the amount of its extension to and diffusion through each nation, meaning the nation as a whole—the average man as well as the superior spirits? You may sacrifice either the many to the few—as was done by slavery—or the few to the many, or the advance may be general and proportionate in all classes.
Again, when we think of progress, are we to think of the world as a whole, or only of the stronger and more capable races and states? If the stronger rise upon the prostrate bodies of the weaker, is this clear gain to the world, because the stronger will ultimately do more for the world, or is the loss and suffering of the weaker to be brought into the account? I do not attempt to discuss these questions; it is enough to note them as fit to be remembered; for perhaps all three kinds of progress ought to be differently judged if a few leading nations only are to be regarded, or if we are to think of all mankind.
It is undeniable that war has often been accompanied by an advance in civilization. If we were to look for progress only in time of peace there would have been little progress to discover, for mankind has lived in a state of practically permanent warfare. The Egyptian and Assyrian monarchs were always fighting. The author of the Book of Kings speaks of spring as the time when kings go forth to war, much as we should speak of autumn as the time when men go forth to shoot deer. "War is the natural relation of states to one another," said Plato. The fact has been hardly less true since his day, though latterly men have become accustomed to think of peace as the normal, war as the abnormal or exceptional, relation of states to one another. In the ancient world, as late as the days of Roman conquest, a state of peace was the rare exception among civilized states as well as barbarous tribes. But Carthage, like her Phoenician mother-city, went on building up a mighty commerce till Rome smote her down, and the Hellenic people, in its many warring cities, went on producing noble poems and profound philosophical speculations, and rearing majestic temples and adorning them with incomparable works of sculpture, in the intervals of their fighting with their neighbors of the same or other races. The case of the Greeks proves that war and progress are compatible.
The capital instance of the association of war with the growth and greatness of a state is found in Prussia. One may say that her history is the source of the whole thesis and the basis of the whole argument. It is a case of what, in the days when I learned logic at the University of Oxford, we used to call the induction from a single instance. Prussia, then a small state, began her upward march under the warlike and successful prince whom her people call the Great Elector. Her next long step to greatness was taken by Frederick II, again by favor of successful warfare, though doubtless also by means of a highly organized, and for those days very efficient, administration. Voltaire said of Frederick's Prussia that its trade was war. Another war added to her territory in 1814-15. Three successful wars—those of 1864, 1866, and 1870-71—made her the nucleus of a united German nation and the leading military power of the Old World.
Ever since those victories her industrial production, her commerce, and her wealth have rapidly increased, while at the same time scientific research has been prosecuted with the greatest vigor and on a scale unprecedentedly large. These things were no doubt achieved during a peace of forty-three years. But it was what one may call a belligerent peace, full of thoughts of war and preparations for war. There is no denying that the national spirit has been carried to a high point of pride, energy, and self-confidence, which have stimulated effort in all directions and secured extraordinary efficiency in civil as well as in military administration. Here, then, is an instance in which a state has grown by war and a people has been energized by war.