It is a great mistake to suppose, as is by some, that it originated with demagogues, who excited the discontent with the intention of aiding their personal advancement, or with the disappointed ambition of certain politicians, who resorted to it as a means of retrieving their fortunes. On the contrary, all the great political influences of the section were arrayed against excitement, and exerted to the utmost to keep the people quiet. The great mass of the people of the South were divided, as in the other section, into Whigs and Democrats. The leaders and the presses of both parties in the South were very solicitous to prevent excitement and to preserve quiet; because it was seen that the effects of the former would necessarily tend to weaken, if not destroy, the political ties which united them with their respective parties in the other section. Those who know the strength of the party ties will readily appreciate the immense force which this cause exerted against agitation, and in favor of preserving quiet. But, great as it was, it was not sufficient to prevent the wide-spread discontent which now pervades the section. No; some cause, far deeper and more powerful than the one supposed, must exist, to account for discontent so wide and deep. The question then recurs: What is the cause of this discontent? It will be found in the belief of the people of the Southern States, as prevalent as the discontent itself, that they cannot remain, as things now are, consistently with honor and safety, in the Union. The next question to be considered is: What has caused this belief? One of the causes is, undoubtedly, to be traced to the long-continued agitation of the slavery question on the part of the North, and the many aggressions which they have made on the rights of the South during the time. I will not enumerate them at present, as it will be done hereafter in its proper place. There is another lying back of it--with which this is intimately connected--that may be regarded as the great and primary cause. This is to be found in the fact, that the equilibrium between the two sections, in the Government as it stood when the Constitution was ratified and the Government put in action, has been destroyed. At that time there was nearly a perfect equilibrium between the two, which afforded ample means to each to protect itself against the aggression of the other; but, as it now stands, one section has the exclusive power of controlling the Government, which leaves the other without any adequate means of protecting itself against its encroachment and oppression. To place this subject distinctly before you, I have, Senators, prepared a brief statistical statement, showing the relative weight of the two sections in the Government under the first census of 1790, and the last census of 1840.