The strongest and best reason that can be given for our supineness on the subject of slavery, is the fear of dissolving the Union. The Constitution of the United States demands our highest reverence. Those who approve, and those who disapprove of particular portions, are equally bound to yield implicit obedience to its authority. But we must not forget that the Constitution provides for any change that may be required for the general good. The great machine is constructed with a safety-valve, by which any rapidly increasing evil may be expelled whenever the people desire it. If the Southern politicians are determined to make a Siamese question of this also--if they insist that the Union shall not exist without slavery--it can only be said that they join two things, which have no affinity with each other, and which cannot permanently exist together. They chain the living and vigorous to the diseased and dying; and the former will assuredly perish in the infected neighborhood. The universal introduction of free labor is the surest way to consolidate the Union, and enable us to live together in harmony and peace. If a history is ever written entitled "The Decay and Dissolution of the North American Republic," its author will distinctly trace our downfall to the existence of slavery among us. There is hardly any thing bad, in politics or religion, that has not been sanctioned or tolerated by a suffering community, because certain powerful individuals were able to identify the evil with some other principle long consecrated to the hearts and consciences of men. Under all circumstances, there is but one honest course; and that is to do right, and trust the consequences to Divine Providence. "Duties are ours; events are God's." Policy, with all her cunning, can devise no rule so safe, salutary, and effective, as this simple maxim. We cannot too cautiously examine arguments and excuses brought forward by those whose interest or convenience is connected with keeping their fellow-creatures in a state of ignorance and brutality; and such we shall find in abundance, at the North as well as the South. I have heard the abolition of slavery condemned on the ground that New-England vessels would not be employed to export the produce of the South, if they had free laborers of their own. This objection is so utterly bad in its spirit, that it hardly deserves an answer. Assuredly it is a righteous plan to retard the progress of liberal principles, and "keep human nature for ever in the stocks," that some individuals may make a few hundred dollars more per annum! Besides the experience of the world abundantly proves that all such forced expedients are unwise. The increased prosperity of one country, or of one section of a country, always contributes, in some form or other, to the prosperity of other states. To "love our neighbor as ourselves," is, after all, the shrewdest way of doing business.