DEAR SIR,--Absence at an occasional but distant residence, prevented my receiving your friendly letter of October 20th till three days ago. A line from my good old friends is like balm to my soul. You ask me what you are to do with my letter of September 19th? I wrote it, my dear Sir, with no other view than to pour my thoughts into your bosom. I knew they would be safe there, and I believed they would be welcome. But if you think, as you say, that "good may be done by showing it to a few _well-tried friends_," I have no objection to that, but ultimately you cannot do better than to throw it into the fire. My confidence, as you kindly observed, has been often abused by the publication of my letters for the purposes of interest or vanity, and it has been to me the source of much pain to be exhibited before the public in forms not meant for them. I receive letters expressed in the most friendly and even affectionate terms, sometimes, perhaps, asking my opinion on some subject. I cannot refuse to answer such letters, nor can I do it dryly and suspiciously. Among a score or two of such correspondents, one perhaps betrays me. I feel it mortifyingly, but conclude I had better incur one treachery than offend a score or two of good people. I sometimes expressly desire that my letter may not be published; but this is so like requesting a man not to steal or cheat, that I am ashamed of it after I have done it. Our government is now taking so steady a course as to show by what road it will pass to destruction, to-wit: by consolidation first, and then corruption, its necessary consequence. The engine of consolidation will be the federal judiciary; the two other branches, the corrupting and corrupted instruments. I fear an explosion in our State Legislature. I wish they may restrain themselves to a strong but temperate protestation. Virginia is not at present in favor with her co-States. An opposition headed by her would determine all the anti-Missouri States to take the contrary side. She had better lie by, therefore, till the shoe shall pinch an eastern State. Let the cry be first raised from that quarter, and we may fall into it with effect. But I fear our eastern associates wish for consolidation, in which they would be joined by the smaller States generally. But, with one foot in the grave, I have no right to meddle with these things. Ever and affectionately yours. TO ----. MONTICELLO, November 29, 1821. DEAR SIR,--You have often gratified me by your astronomical communications, and I am now about to amuse you with one of mine. But I must first explain the circumstances which have drawn me into a speculation so foreign to the path of life which the times in which I have lived, more than my own inclinations have led me to pursue.