The fact that invention has not only been increasing during the past one hundred years, but that its speed of increase has been increasing and is still increasing, is well recognized. There seems to be a constant force behind invention that imparts to it an acceleration, comparable to that of gravity in accelerating the descent of a falling stone. Such a phenomenon would be thoroughly conformable to modern theories; and that there is a force, impelling people to invent, must be a fact; for otherwise, they would not invent. If that force be constant, the acceleration imparted to invention will be constant. If the force be variable, the acceleration imparted to invention will be variable. In other words, the future speed of invention, like that of every moving body, must be governed by the force behind it and the resistances opposed.

At the present moment, the resistance to invention is being gradually lessened because the benefits coming from invention are being realized. Simultaneously, the facilities for inventing are being increased.

These facilities are mainly in instruments of measurements and research. So many of these are there now, that it would only complicate matters to enumerate them and describe their spheres. Two of the most important are the spectroscope and the photographic camera. By means of the spectroscope, the astronomer can ascertain the chemical elements of far distant stars, the temperature and pressure under which they exist, the stage of progress of the star, and its speed and direction of movement, whether toward us or away. By means of the photographic camera, not only can records be made of stars so far away and faint that light-waves from them cannot be noted by the eye, even with the assistance of the most powerful telescope,—but a virtually unlimited number of permanent records can be made.

All fields of research now feel the assistance imparted by new instruments and methods. Even the chemist realizes the aid of instruments invented by the physicist; while every physicist welcomes the aid that comes to him from chemists. The chemists and the physicist are now working together in harmony and with enthusiasm, engaged in a friendly rivalry as to which shall help the other most. And, as discovery succeeds discovery, and invention succeeds invention, they find themselves—although the domain of each is widening—not drifting farther apart, but drawing closer together. For it seems to be coming more and more assured that the Laws of Nature are simpler than we thought, that chemistry and physics are more alike than we supposed. Many startling generalizations have been suggested, with much reason; such as, that matter and energy are one, that space and time are one, and that even the mind of man may be subjected to physical methods and analysis. In fact, some of the greatest advances made during the past twenty-five years have been in psychology, and achieved largely by the use of physical apparatus. Many subjects, formerly included with alchemy and astrology in the class of occult if not deceitful arts, are now being developed apparently toward more or less exact sciences; as alchemy was developed into chemistry, and astrology into astronomy. Efforts are even being made to communicate with distant planets and with the spirits of the dead. That much is being attempted that may not be realized is true. But if we realize that the universe is now supposed to be many millions of years old, it seems only yesterday that the phenomena of electrical and magnetic attraction and repulsion were confusing the minds of even the wisest: and now electricity and magnetism are harnessed together, and working together in perfect harmony and marvelous effectiveness, for the good of man.

That the future of invention is to be as brilliant as its past, every omen indicates. In what direction will it proceed? Probably in all directions. But the line of direction that will occur the first to many, is probably in aerial flight. Doubtless it is in aerial flight that the greatest advance has been made since flight was first successfully accomplished in 1903; and doubtless it is in that line that the greatest progress is being made now. The enormous speeds already achieved; the growing size of both aeroplanes and dirigibles; their increasing speed, safety and convenience; the fact that roads are not needed for aerial transportation as they are for carriages and railway trains, or deep water channels as for water craft; and the comparative cheapness with which people and light packages can be carried swiftly and far, all point to a vast increase in aerial transportation, and a great modification in all our modes of living in consequence.

Akin to transportation is communication:—but in communication, one may reasonably feel that we have arrived almost at the boundary line, not only of the possible but even the desirable. For we have almost instantaneous communication all over the surface of the earth and under almost all the ocean, by the telegraph and telephone, using wires and cables; and nearly equally good communication by radio telegraph, using no material connection whatever. The wireless telephone is following fast on the heels of the wireless telegraph; and by it we can already telephone hundreds of miles between stations on land and sea, and carry on conversation for several miles between fast moving aeroplanes.

But progress is going on rapidly also in the older fields of invention. The ocean steamship, especially the battleship, is growing in size, speed and safety; so is the locomotive, so is the automobile. Because of the progress in all the useful arts and sciences, buildings of all kinds are being constructed higher and larger, and more commodious and safe; civil engineering works of all description—roads, canals, bridges and tunnels are setting their durable marks of progress all over the earth; the uses of electricity are growing, and showing every indication that they will continue so to do; and so are the uses of chemistry and light and heat. And through all the industrial world, in manufactures of every kind, we see the same unmistakable signs of progress, increasing progress and increasing rate of progress.

In the field of pure science, we note the same signs of progress, increasing progress, and increasing speed of progress. Naturally, however, it is far more difficult to predict with confidence the direction which future progress will take in this field than in the field of the practical application of pure science, in which invention usually bestirs itself. The fact, however, that any actual advance has begun in any new science gives the best possible reason for expecting that the advance is going to continue. Therefore, we may expect continuing progress in all branches of pure science: for the near future, for instance, in biology, psychology and what is loosely called "psychics," which seems to be a virtual excursion of psychology into the hazy realms of telepathy, clairvoyance, spiritualism, and so forth. That invention and research are concerning themselves more and more with immaterial subjects is a fact that is not only noticeable but of vital importance to us, for signs are not lacking that man's material comfort is already sufficiently well-assured; in fact, that perhaps he is already too comfortable for his physical well-being. Already we see that labor saving and comfort-producing appliances are impairing the physical strength of men and women, and to such a degree that artificial exercises are prescribed by doctors. Inasmuch as "the mind is its own place, and in itself can make a heaven of hell, a hell of heaven," it seems probable that the direction of effort in which the greatest real benefit can be attained is in research and consequent invention concerning the mind itself. But, for the reason that this is probably the most difficult road, it seems probable that success in it may come the latest. It seems probable also that even in that road, progress will be achieved by means analogous to those by which it has been achieved in other roads; that is by the use of physical and chemical instruments and methods. Much has been done already by their aid in psychology, and much more is promised in the not distant future.

The idea of influencing the mind directly to states of happiness, and guarding it from unhappiness, is far from new; for what were the epicureans, stoics, and others trying to do but that? Such attempts, many systems of philosophy and many mystic sects distinctly made. Of these sects, one of the most interesting was that of the omphalopsychites, who were able to raise themselves to high states of happiness by the simple and inexpensive process of gazing at their navels. Some advantages of their system are obvious. Certainly it was less costly than other means of gaining happiness, such as wearing narrow-toed shoes, chewing tobacco, smoking cigarettes and drinking whiskey; and there is no evidence that it ever caused ingrowing toe-nails, delirium tremens, or Bright's disease.

That invention and progress have produced and may be relied upon to continue to produce prosperity, may reasonably be predicted. But will they together produce happiness?

The author respectfully begs to be excused from answering this question. He requests attention, however, to the manifest facts that invention is a natural gift, that the impetus to invention has always been the desire to achieve prosperity of some kind, and that to employ our natural gifts to satisfy our natural instincts can reasonably be expected to further our happiness; unless, indeed, we suspect Nature of playing tricks upon us.

That Nature sometimes seems to do this, and that it is dangerous to follow our instincts blindly is of course a fact. But it seems to be a fact also that the danger in following our instincts seems to come only when we follow them blindly; and that, though there may be danger sometimes in following them even under the guidance of our reason, yet the only way in which we have ever progressed at all has been by following our instincts under reason's guidance, and invention's inspiration.

And since the civilized world is in virtual agreement that civilization is a happier state than savagery, and since we have been impelled toward civilization by invention mainly, there seems no escape from the conclusion that it is to invention mainly that we must look for increase of happiness in the future.

It may be, of course, that happiness does not come so much from a condition or state attained as from the act of striving to attain it. It may be suggested also by some one that life is merely a game, and that happiness comes from playing the game and not from winning it, just as children delight more in constructing a toy building with their blocks than in the building when completed: for they no sooner complete the building than they knock it down, and begin to build it up again. But, even from this point of view, the desirability of fostering invention would be apparent; because it would continually supply us with new games to play, and new toys with which to play them.

But that any thoughtful person could really think life a game is an impossibility. No man with a mind to reason and a soul to feel can contemplate the awful suffering that has always existed in the world, and think life a mere game. No man can think life a mere game, who with an eye to see and an imagination to conceive, gazes upon the infinite sea of stars visible to his unaided vision, realizes how many thousands upon thousands of stars there are besides, that the photographic camera records, and realizes also that, though light travels even through air at a rate exceeding 186,000 miles per second, yet that some stars are so distant that the light now reaching us from them started ages before the dawn of history. And no man who is able to follow the teachings of science, even superficially, can note the enormous development of civilization during the last few thousand years, and realize that a development similar though infinitely grander, must have been going on in all the universe for countless centuries, without realizing also that "through the ages an increasing purpose runs." He may even note a likeness between it and the development on an infinitely smaller scale, of the conception of a merely human inventor. Possibly, his fancy may even soar still higher: possibly he may even wonder if all this great creation may not be in effect a great invention, and God its Great Creator, because its Great Inventor.

So, whether we fix our thought on what the scientists tell us of the probable course of development of the universe during the countless ages of the past, or consider merely the development of man since the dawn of recorded history, we seem to find as the initiating cause of both—invention.

Let us therefore utilize all means possible to develop this Godgiven faculty, the chiefest of the talents committed to our keeping. That way lie progress, prosperity and happiness. How far and how high it may lead us, God only knows; for the resources of invention are infinite.

The End.