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from “letter to his son” still, a union that can only be maintained by swords and bayonets, and in which strife and civil war are to take the place of brotherly love and kindness, has no charm for me. i shall mourn for my country and for the welfare and progress of mankind. if the union is dissolved, and the government disrupted, i shall return to my native state and share the miseries of my people; and, save in defense, will draw my sword on none.
the diction in this passage indicates that lee is

detached

disinterested

objective

resolved