abstract：InAmericathepurelypracticalpartofscienceisadmirablyunderstood,andcarefulattentionispaidtothetheoreti

In America the purely practical part of science is admirably understood, and careful attention is paid to the theoretical portion which is immediately requisite to application. On this head the Americans always display a clear, free, original, and inventive power of mind. But hardly anyone in the United States devotes himself to the essentially theoretical and abstract portion of human knowledge. In this respect the Americans carry to excess a tendency which is, I think, discernible, though in a less degree, amongst all democratic nations.

Nothing is more necessary to the culture of the higher sciences, or of the more elevated departments of science, than meditation; and nothing is less suited to meditation than the structure of democratic society. We do not find there, as amongst an aristocratic people, one class which clings to a state of repose because it is well off; and another which does not venture to stir because it despairs of improving its condition. Everyone is actively in motion: some in quest of power, others of gain. In the midst of this universal tumult - this incessant conflict of jarring interests - this continual stride of men after fortune - where is that calm to be found which is necessary for the deeper combinations of the intellect? How can the mind dwell upon any single point, when everything whirls around it, and man himself is swept and beaten onwards by the heady current which rolls all things in its course? But the permanent agitation which subsists in the bosom of a peaceable and established democracy, must be distinguished from the tumultuous and revolutionary movements which almost always attend the birth and growth of democratic society. When a violent revolution occurs amongst a highly civilized people, it cannot fail to give a sudden impulse to their feelings and their opinions. This is more particularly true of democratic revolutions, which stir up all the classes of which a people is composed, and beget, at the same time, inordinate ambition in the breast of every member of the community. The French made most surprising advances in the exact sciences at the very time at which they were finishing the destruction of the remains of their former feudal society; yet this sudden fecundity is not to be attributed to democracy, but to the unexampled revolution which attended its growth. What happened at that period was a special incident, and it would be unwise to regard it as the test of a general principle. Great revolutions are not more common amongst democratic nations than amongst others: I am even inclined to believe that they are less so. But there prevails amongst those populations a small distressing motion -a sort of incessant jostling of men - which annoys and disturbs the mind, without exciting or elevating it. Men who live in democratic communities not only seldom indulge in meditation, but they naturally entertain very little esteem for it. A democratic state of society and democratic institutions plunge the greater part of men in constant active life; and the habits of mind which are suited to an active life, are not always suited to a contemplative one. The man of action is frequently obliged to content himself with the best he can get, because he would never accomplish his purpose if he chose to carry every detail to perfection. He has perpetually occasion to rely on ideas which he has not had leisure to search to the bottom; for he is much more frequently aided by the opportunity of an idea than by its strict accuracy; and, in the long run, he risks less in making use of some false principles, than in spending his time in establishing all his principles on the basis of truth. The world is not led by long or learned demonstrations; a rapid glance at particular incidents, the daily study of the fleeting passions of the multitude, the accidents of the time, and the art of turning them to account, decide all its affairs.

In the ages in which active life is the condition of almost everyone, men are therefore generally led to attach an excessive value to the rapid bursts and superficial conceptions of the intellect; and, on the other hand, to depreciate below their true standard its slower and deeper labors. This opinion of the public influences the judgment of the men who cultivate the sciences; they are persuaded that they may succeed in those pursuits without meditation, or deterred from such pursuits as demand it.

There are several methods of studying the sciences. Amongst a multitude of men you will find a selfish, mercantile, and trading taste for the discoveries of the mind, which must not be confounded with that disinterested passion which is kindled in the heart of the few. A desire to utilize knowledge is one thing; the pure desire to know is another. I do not doubt that in a few minds and far between, an ardent, inexhaustible love of truth springs up, self-supported, and living in ceaseless fruition without ever attaining the satisfaction which it seeks. This ardent love it is - this proud, disinterested love of what is true - which raises men to the abstract sources of truth, to draw their mother-knowledge thence. If Pascal had had nothing in view but some large gain, or even if he had been stimulated by the love of fame alone, I cannot conceive that he would ever have been able to rally all the powers of his mind, as he did, for the better discovery of the most hidden things of the Creator. When I see him, as it were, tear his soul from the midst of all the cares of life to devote it wholly to these researches, and, prematurely snapping the links which bind the frame to life, die of old age before forty, I stand amazed, and I perceive that no ordinary cause is at work to produce efforts so extra-ordinary.

The future will prove whether these passions, at once so rare and so productive, come into being and into growth as easily in the midst of democratic as in aristocratic communities. For myself, I confess that I am slow to believe it. In aristocratic society, the class which gives the tone to opinion, and has the supreme guidance of affairs, being permanently and hereditarily placed above the multitude, naturally conceives a lofty idea of itself and of man. It loves to invent for him noble pleasures, to carve out splendid objects for his ambition. Aristocracies often commit very tyrannical and very inhuman actions; but they rarely entertain grovelling thoughts; and they show a kind of haughty contempt of little pleasures, even whilst they indulge in them. The effect is greatly to raise the general pitch of society. In aristocratic ages vast ideas are commonly entertained of the dignity, the power, and the greatness of man. These opinions exert their influence on those who cultivate the sciences, as well as on the rest of the community. They facilitate the natural impulse of the mind to the highest regions of thought, and they naturally prepare it to conceive a sublime - nay, almost a divine - love of truth. Men of science at such periods are consequently carried away by theory; and it even happens that they frequently conceive an inconsiderate contempt for the practical part of learning. "Archimedes," says Plutarch, "was of so lofty a spirit, that he never condescended to write any treatise on the manner of constructing all these engines of offence and defence. And as he held this science of inventing and putting together engines, and all arts generally speaking which tended to any usetul end in practice, to be vile, low, and mercenary, he spent his talents and his studious hours in writing of those things only whose beauty and subtilty had in them no admixture of necessity." Such is the aristocratic aim of science; in democratic nations it cannot be the same.

The greater part of the men who constitute these nations are extremely eager in the pursuit of actual and physical gratification. As they are always dissatisfied with the position which they occupy, and are always free to leave it, they think of nothing but the means of changing their fortune, or of increasing it. To minds thus predisposed, every new method which leads by a shorter road to wealth, every machine which spares labor, every instrument which diminishes the cost of production, every discovery which facilitates pleasures or augments them, seems to be the grandest effort of the human intellect. It is chiefly from these motives that a democratic people addicts itself to scientific pursuits - that it understands, and that it respects them. In aristocratic ages, science is more particularly called upon to furnish gratification to the mind; in democracies, to the body. You may be sure that the more a nation is democratic, enlightened, and free, the greater will be the number of these interested promoters of scientific genius, and the more will discoveries immediately applicable to productive industry confer gain, fame, and even power on their authors. For in democracies the working class takes a part in public affairs; and public honors, as well as pecuniary remuneration, may be awarded to those who deserve them. In a community thus organized it may easily be conceived that the human mind may be led insensibly to the neglect of theory; and that it is urged, on the contrary, with unparalleled vehemence to the applications of science, or at least to that portion of theoretical science which is necessary to those who make such applications. In vain will some innate propensity raise the mind towards the loftier spheres of the intellect; interest draws it down to the middle zone. There it may develop all its energy and restless activity, there it may engender all its wonders. These very Americans, who have not discovered one of the general laws of mechanics, have introduced into navigation an engine which changes the aspect of the world.

Assuredly I do not content that the democratic nations of our time are destined to witness the extinction of the transcendent luminaries of man's intelligence, nor even that no new lights will ever start into existence. At the age at which the world has now arrived, and amongst so many cultivated nations, perpetually excited by the fever of productive industry, the bonds which connect the different parts of science together cannot fail to strike the observation; and the taste for practical science itself, if it be enlightened, ought to lead men not to neglect theory. In the midst of such numberless attempted applications of so many experiments, repeated every day, it is almost impossible that general laws should not frequently be brought to light; so that great discoveries would be frequent, though great inventors be rare. I believe, moreover, in the high calling of scientific minds. If the democratic principle does not, on the one hand, induce men to cultivate science for its own sake, on the other it enormously increases the number of those who do cultivate it. Nor is it credible that, from amongst so great a multitude no speculative genius should from time to time arise, inflamed by the love of truth alone. Such a one, we may be sure, would dive into the deepest mysteries of nature, whatever be the spirit of his country or his age. He requires no assistance in his course - enough that he be not checked in it.

All that I mean to say is this: - permanent inequality of conditions leads men to confine themselves to the arrogant and sterile research of abstract truths; whilst the social condition and the institutions of democracy prepare them to seek the immediate and useful practical results of the sciences. This tendency is natural and inevitable: it is curious to be acquainted with it, and it may be necessary to point it out. If those who are called upon to guide the nations of our time clearly discerned from afar off these new tendencies, which will soon be irresistible, they would understand that, possessing education and freedom, men living in democratic ages cannot fail to improve the industrial part of science; and that henceforward all the efforts of the constituted authorities ought to be directed to support the highest branches of learning, and to foster the nobler passion for science itself. In the present age the human mind must be coerced into theoretical studies; it runs of its own accord to practical applications; and, instead of perpetually referring it to the minute examination of secondary effects, it is well to divert it from them sometimes, in order to raise it up to the contemplation of primary causes. Because the civilization of ancient Rome perished in consequence of the invasion of the barbarians, we are perhaps too apt to think that civilization cannot perish in any other manner. If the light by which we are guided is ever extinguished, it will dwindle by degrees, and expire of itself. By dint of close adherence to mere applications, principles would be lost sight of; and when the principles were wholly forgotten, the methods derived from them would be ill-pursued. New methods could no longer be invented, and men would continue to apply, without intelligence, and without art, scientific processes no longer understood.