It is not for inconsistencies of policy in matters of indifference that we should blame a mart or a party, but for making questions of honor and morals matters of indifference. Inconsistency is to be settled, not by seeming discrepancies between the action of one day and that of the next, but by the experience which enables us to judge of motives and impulses. Time, which reconciles apparent contradictions, impeaches real ones, and shows a malicious satirical turn, in forcing men into positions where they must break their own necks in attempting to face both ways. Nor is it for inconsistency that we condemn the Democratic Party. There are no trade-winds for the Ship of State, unless it be navigated by higher principles than any the political meteorologists have yet discovered. But there have been mysterious movements, of late, which raise a violent presumption that our Democratic captain and officers are altering the rig and adapting the hold of the vessel to suit the demands of a traffic condemned by the whole civilized world. They are painting out the old name, letter by letter, and putting "Conservative" in its stead. They seem to fancy there is such a thing as a slave-trade-wind, and are attempting to beat up against what they profess to believe a local current and a gust of popular delusion. We think they are destined to find that they are striving against the invincible drift of Humanity and the elemental breath of God. It is an ominous _consistency_ with which we charge the Democratic Party. Mr. Cushing affirms, that the Republicans have no argument but the "cry of _Slavepower!_"--which is as eloquent a one as the old Roman's _Delenda est Carthago_, to those who know how many years of bitter experience, how many memories of danger and forebodings of aggression, are compressed in it. But he is mistaken; Democratic administrations have been busy in supplying arguments, and we complain rather of their abundance than their paucity. The repeal of the Missouri Compromise, the Kansas policy, which even office-holders who had gulped their own professions found too nauseous to swallow, and the Dred Scott decision,--if these be not arguments, then history is no teacher, and events have no logic.