Much danger is feared from the "political agitation" of this matter. Great principles have never been discussed without great passions, and will not be, for some time, I suppose. But men fear to have this despotic idea become a subject of discussion. Last spring, Mr. Webster said here in Boston, "We shall not see the legislation of the country proceed in the old harmonious way, until the discussion in Congress and out of Congress, upon the subject [of slavery] shall be in some manner suppressed. Take that truth home with you!" We have lately been told that political agitation on the subject must be stopped. So it seems this law, like that which Daniel would not keep, is one that may not be changed, and must not be talked of. Now there are three modes in which attempts may be made to stop the agitation. 1. By sending "----troops, with guns and banners, Cut short our speeches and our necks, And break our heads to mend our manners." That is the Austrian way, which has not yet been tried here, and will not be. 2. By sending lecturers throughout the land, to stir up the people to be quiet, and agitate them till they are still; to make them sign the pledge of total abstinence from the discussion of this subject. That is not likely to effect the object. 3. For the friends of silence to keep their own counsel--and this seems as little likely to be tried, as the others to succeed. Strange is it to ask us to forbear to talk on a subject which involves the welfare of twenty million men! As well ask a man in a fever not to be heated, and a consumptive person not to cough, to pine away and turn pale. Miserable counsellors are ye all, who give such advice. But we have seen lately the lion of the democrats, and the lamb of the whigs, lie down together, joined by this opinion, so gentle and so loving, all at once, that a little child could lead them, and so "fulfil the sure prophetic word." Yes, we have seen the Herod of one party, and the Pilate of the other, made friends for the sake of crucifying the freedom of mankind. But there is one way in which, I would modestly hint, that we might stop all this talk "in Congress and out of Congress," that is, to "discuss" the matter till we had got at the truth, and the whole truth; then to "agitate" politically, till we had enacted justice into law, and carried it out all over the North, and all over the South. After that there would be no more discussion about the fugitive slave bill, than about the "Boston port bill;" no more agitation about American slavery, than there is about the condition of the people of Babylon before the flood. I think there is no other way in which we are likely to get rid of this discussion. * * * * *