Thus it is plain that by the legitimate and intended operation of the Constitution, slavery had come to that stage of its existence, when it must either prepare for its own gradual decline and ultimate disappearance, or it must provide means for invigorating and prolonging its life. There was only one way in which its power could be increased and for some time yet firmly established, viz.: by the reopening of the infamous and almost universally condemned African slave trade. This would have accomplished a double purpose. It would have increased the numbers of the South, and enabled them measurably to balance the representation of the North, as well as to extend their dominion over the Territories, and lay the foundations of new States; or, in case of their success in destroying the Union, it would enable them to carry out their cherished schemes of empire, as an independent power. But, what was, perhaps, more important, it would tend to prolong, if not to perpetuate slavery, by infusing new supplies of barbarism among the African race, lowering their present grade of civilization, retarding their improvement on the whole, and thus postponing the inevitable day of their liberation.

There are strong indications, in the early proceedings of the conspirators, that they seriously entertained the design of replenishing their gangs of laborers from the shores of Africa. It was only after the contest had assumed a serious aspect, and the immense difficulties of their position began to dawn upon them, that they were compelled ostensibly to abandon that design. They were compelled to conciliate the border States, which were all opposed to the foreign slave trade. Virginia, whose chief annual income was derived from the sale of her slave population, rather than from the productions of their labor, was an indispensable ally to the rebellion, and she would hardly assent to the importation of Africans, in competition with her own supply. Moreover, it began to be obvious that the aid of foreign powers would be desirable; and their intervention, if to be obtained at all, could not be solicited or hoped for, without the most explicit disavowal of an intention to reëstablish a traffic which had already been denounced as infamous and piratical by the leading powers of the world. The rebels, therefore, were compelled by the exigencies of their condition to prohibit the slave trade in their permanent constitution. Doubtless they would never have done this, had they not been vigorously assailed by the Federal Government, and forced to modify their purposes with a view to conciliate support at home and abroad.

Thus it is apparent that, at the outset of their treason, the objects of the conspirators, however since modified, were utterly hostile to the letter and spirit of our Constitution, and could never be successfully carried out without the overthrow of the Government. The conflict, therefore, of opposite ideas, involved not only the laws of nature, which cannot be altered or arrested, but, also, established institutions of the most sacred character, which could hardly be expected to succumb to the hostile doctrine without a fearful struggle.

In what manner this conflict of opinions and purposes becomes transformed into physical combat and culminates in bloody war, is to be easily understood when the relations of human intellect and passion are duly considered. All philosophy teaches that the intellect is the weaker and less active part of human nature. Passion generally predominates in action, and men are usually more disposed to resist with violence all unwelcome ideas, than to study and estimate them fairly by the laborious exercise of reason. Hence, from the early historical ages, when nations were but imperfectly enlightened, wars have been the principal means of propagating ideas; and most of the great social truths gradually unfolded to man, have been written in blood for his instruction and improvement. Doubtless, if human nature had been different, if passion and intellect in his constitution had been mingled in other proportions, it would have been easier, if not better, to have disseminated great truths by the more peaceful means of argument and friendly communication of thought; and it is to be hoped that the time is not far distant when reason will everywhere take the place of passion, and brutal force no longer be necessary for the work of intellectual conviction and moral enlightenment. But, evidently, this time has not yet arrived for the people of our Southern States, whatever may be the condition in this respect of the more civilized and enlightened portions of mankind. Nor, indeed, could any different disposition of the Southern people he expected in their present social condition. One third of their population is composed of African slaves, semicivilized, systematically deprived of knowledge, and subjected to physical coercion, instead of being incited to usefulness by the higher motives of self-interest and laudable ambition. To say that this is a degraded class, is only to recognize their supreme misfortune, and not to reproach or insult them on account of their unhappy condition. But this degradation does not affect them alone. It reaches their oppressors also, and involves them in its unavoidable consequences. By that inevitable law of action and reaction which prevails alike in moral and social as in physical phenomena, the community which has so large a portion of its members in a condition of ignorance and brutality, must, throughout its whole body, partake of the degradation which exists within it, and must be affected, by the very contact, in all its feelings, sentiments, and purposes, through the gross and ignorant passions which such an association cannot fail to arouse. The moral level of the whole society is lowered to the average condition of its constituent parts. To expect the controlling power of such a community to be accessible to reason and conciliation, would indeed argue an utter ignorance of the whole slave system and of its influence upon the minds and hearts of those who sustain it. War is the normal condition of those communities which cherish slavery; and although such an institution, misplaced in connection with the civilization of the nineteenth century, may seem to have changed its original nature in accordance with existing circumstances, yet, when its purposes are thwarted, it is ever ready for military violence. It is like a native barbarian, schooled and trained to apparent civilization, but ever inclined, at the first temptation, to fall into his natural habits of wild and savage life. The Southern organization has already proved itself to be peculiarly fitted for warlike operations; it has been correspondingly unsuited to modern industrial pursuits, except for the simplest and most primitive of all labors, those of agriculture. Indeed, these were always the principal occupations of slaves, even in those early stages of human progress when these classes were left at home to till the soil, while the masters followed their ordinary occupation of war. The same constitution of society at the present day leaves the masters free, it is true, to engage in more humane and elevated occupations, but not without an evident inclination or easy adaptation for those bold and bad pursuits from which slavery originally arose, and which it afterwards contributed so much to sustain and prolong.

But, notwithstanding this natural inclination of slaveholders toward commotion and war, it is not to be denied, on the other hand, that in civil conflicts like ours, in which discordant opinions and important local interests are involved, the issue of peace or war may to a great extent be controlled by that party which has the right of the controversy. Its conduct may be forbearing and conciliatory, or it may be insulting and calculated to invite resistance. A magazine may be dangerous in itself, for an accidental spark or an unintended friction of apparently harmless substances may cause it to explode; but, at the same time, the catastrophe may be brought on by the wilful folly of those whose duty it is to provide the necessary precautions against danger. The North has unquestionably been right in the contest on slavery, as to all the moral and economical aspects of the question; and generally, too, us to all the political principles involved. But has she not been violent and abusive—so offensively obtruding into the local affairs of the opposite section, as unnecessarily to arouse the angry passions of the South, rather than to encourage the calm exercise of reason? The answer to this question is by no means so obvious and easy as may at first be supposed. The whole subject has been so complicated with party movements, that it becomes impossible to follow the ramifications of influence, and to determine what share individuals or parties, on one side or the other, may have had in the responsibility for the angry controversy, its aggravating incidents, and its general results. This, however, is certain: the slaveholders have for many years controlled the Democratic party, and that organization has held the power of government in its hands during far the greater part of our national existence. Important concessions have been made to their interests, from time to time, during the whole period; and no single instance of actual wrong to the South, by the violation, of any acknowledged constitutional right, can be designated, in the whole action of the Federal Government from the time of its establishment down to the commencement of this rebellion.

Nor can it be denied, that while in power with the Democratic party and ascendant in its counsels, the South has been exacting in the extreme, and has often made demands wholly incompatible with the true interests of liberty and humanity. Witness the offensive form in which the fugitive slave law was passed, and its execution enforced in the North, wholly regardless of the natural and irrepressible sympathies of a humane people; and, on the other hand, the unnecessary and sinister excitement deliberately aroused and kept up, in the extreme Southern States, on this subject of fugitives, although it is well known that no considerable losses of that kind have ever been suffered in that quarter. So likewise as to slavery in the Territories. It has often been admitted by Southern statesmen of the extreme school, that the Territories recently organized, over which so much bitter controversy has occurred, are altogether unsuited in climate and productions for the employment of slave labor; and few will deny, whether those Territories be physically adapted or not adapted to the labor of Africans, that the South had not the means of populating them without an increase of slaves from their native continent, or by a resort to some other source of ample supply. Here, then, was a most violent and persistent effort to secure the acknowledgment of a right to do what they had not the means to accomplish, and what they could not obtain the means of doing without the actual overthrow of the Government, as well as a flagrant violation of the moral sentiments of mankind.

On this score, therefore, the account seems to be tolerably well balanced; for if Northern men have sometimes wantonly started hostile and injurious agitation, calculated to arouse fierce passions and to close the ears of the Southern people to the voice of reason; these, on the other hand, are liable to equal or greater censure for having made impossible demands, as unnecessary as they were inadmissible, and liable from their very extravagance to be considered as mere pretexts, deliberately adopted with a view to aggravate the quarrel and prevent a reconciliation. It is difficult to admit any other explanation of the extraordinary policy of the Southern leaders. It is not improbable that they will henceforward acknowledge such to have been the motive of their principal political acts for many years past. The terrible events now passing before our saddened eyes, are too solemn and weighty, not to be understood in all their past relations and in all their present import. They stand forth in stern and awful reality, glaring in the lurid light of the past and casting dark shadows over the future, while they sweep away all false pretences, and lay bare the real motives which, from the beginning, have actuated the men who are prominent in performing the great drama.

But these questions of transient passions and objurgatory provocation are trivial and unimportant. They do not touch the real causes of the difficulty; they are but the froth on the surface of the deep and mighty current of events, which was rushing on to the gulf of rebellion. The time had come, in the history of our country, when, by the necessary working of its institutions, the most solemn question of the age was to be determined. Slavery must either accept its inevitable doom and prepare for ultimate extinction, or it must provide new means for prolonging its existence and reëstablishing its waning power. In three quarters of a century, the Constitution of 1787 had done its work. It had suppressed the immigration of Africans; it had established that of Europeans. Free white labor had demonstrated its superiority and achieved a complete victory over slavery; and the political power, long wielded by the Southern men, had passed forever out of their hands, as the representatives and supporters of the slave policy. In the Senate, in the House of Representatives, in the great majority of States, in all the Territories, and, finally, in the very citadel of their former power, the presidential mansion, their almost immemorial superiority had been utterly overthrown. The Government was about to assume its true character, as the home of liberty and the veritable asylum of humanity. Slavery, fallen into the minority, was about to experience an accelerated decline and eventually to disappear. To resist this doom, was to fight against the Constitution and against destiny.

The people of the Southern States were wholly unwilling to accept the condition to which the legitimate workings of the Constitution had fairly brought them. Being a minority in numbers and in representative weight, they rose up in rebellion against this unalterable fact. They foresaw it, and, by every possible device, resisted it before it came. When it arrived, they resisted still more madly, even to the extent of self-destruction. The minority was arrayed not merely against the majority, but also against the necessary results of our institutions and against the decrees of nature: that is to say, against the law of man, and against the law of God. The majority was expected to give way, and to permit the engine of national progress to be reversed, our eighty years of glorious history to be undone, and humanity itself to be turned back upon the dreary path of its earliest and saddest struggles. This refused, the alternative was the destruction of the Government.

It was wholly impossible for the majority to make any satisfactory concessions to a minority infatuated with such ideas. Compromise was impracticable, so long as the rebellious States made the perpetuity of slavery and the predominance of its power an indispensable condition of any arrangement. Their demands were forever inadmissible so long as they remained in the Union; and to permit them to effect their purposes as an independent confederacy, was equally out of the question. There is no longer any division of sentiment on this point, whatever doubts may have been expressed in the beginning. Separation of the States would be disastrous and fatal to all the fragmentary governments which would take the place of this majestic Union. The nation instinctively feels that its unity is its salvation—that disunion will be destructive of all its long-cherished and glorious hopes. Its permanent peace, its prosperity and progress, its greatness, its honor, and its influence among civilized nations—all depend on its unity. These, which are the glory of our country to every patriotic heart, were the stumbling blocks to the conspirators. Slavery was ambitious and discontented with its appointed lot; it was determined; it rushed headlong to its fatal purpose. The nation stood in its path, and would not, could not get out of the way. This is the central fact of the whole controversy. National unity is on the one side—the disintegration and anarchy which slavery demands, are on the other. These are the contending forces; they are engaged in mortal combat, and one or the other must be utterly overthrown and destroyed. Slavery must succumb and consent to disappear, or the Union of our fathers must go down in the dust, never again to rise.