I just followed what Davis said numerous times. The "right to hold other human beings as property" is profoundly reactionary. The Confederate constitution is a modified version of the U.S. High on the agenda of both the national & state governments was to adopt existing laws & regulations. There was nothing revolutionary in the agenda of the seceding governments.
The purest statements of why & what the agenda of the seceding states is in Dr. Charles Dew's 'Apostiles of Disunion.'
The initial seceding states published an official proclamation explaining the break with the union to their own populace. They also appointed commissioners that were ambassadors to slave state governments still in the Union.
Dew wisely lets the states & commissioners speak for themselves. It is Commissioner Benning's terse one sentence declaration of why Georgia seceded that I quote often.
Should anyone want to know how the seceding states explained their actions, Dr Dew's book is a unique resource. It is still in print.
Link:
Charles Dew’s Apostles of Disunion has established itself as a modern classic and an indispensable account of the Southern states’ secession from the
www.upress.virginia.edu