Absolute nonsense. Lincoln could not interfere with slavery where it existed and he knew that. Anyone with half a brain could see that. Ending slavery where it existed would require a Constitutional amendment, a total impossibility. But halting the expansion was something the government could do by challenging the Dred Scott decision and halting slavery in the territories. And Lincoln knew that, too.
The point of the sentence was that the ECONOMIC SYSTEM OF PRODUCTION SHOULD NOT BE DISTURBED
Now who's engaging in pure speculation and total misrepresentation?
Let me say again: The point of the sentence was that the ECONOMIC SYSTEM OF PRODUCTION SHOULD NOT BE DISTURBED