In a letter to General Robert E. Lee, former General in Chief of the Armies of the Confederate States, John Emerich Edward Dalberg, Lord Acton, expresses his opinion of State sovereignty:

       Without presuming to decide the purely legal question, on which it seems evident to me from Madison’s and Hamilton’s papers that the Fathers of the Constitution were not agreed, I saw in State Rights the only availing check upon the absolutism of the sovereign will, and secession filled me with hope, not as the destruction but as the redemption of Democracy.

       I saw in State Rights the only availing check upon the absolutism of the sovereign will, and secession filled me with hope, not as the destruction but as the redemption of [d]emocracy.  The institutions of your Republic have not exercised on the old world the salutary and liberating influence which ought to have belonged to them, by reason of those defects and abuses of principle which the Confederate Constitution was expressly and wisely calculated to remedy.  I believed that the example of that great Reform would have blessed all the races of mankind by establishing true freedom purged of the native dangers and disorders of Republics.  Therefore, I deemed that you were fighting the battles of our liberty, our progress, and our civilization; and I mourn for the stake which was lost at Richmond more deeply than I rejoice over that which was saved at Waterloo.

       [added 4/30/2022] Thanks to Freedom’s Phoenix for this entry.