"I have been shown a letter on this subject, supposed to be an able one, in which the writer expresses regret that my mind has not seemed to be definitely fixed on the question whether the seceding States, so called, are in the Union or out of it. It would perhaps, add astonishment to his regret, were he to learn that since I have found professed Union men endeavoring to make that question, I have purposely forborne any public expression upon it. As appears to me that question has not been, nor yet is, a practically material one, and that any discussion of it, while it thus remains practically immaterial, could have no effect other than the mischievous one of dividing our friends. As yet, whatever it may hereafter become, that question is bad, as the basis of a controversy, and good for nothing at all — a merely pernicious abstraction."