Group a by sinel's death i know i am thane of glamis; but how of cawdor? the thane of cawdor lives, a prosperous gentleman; and to be king stands not within the prospect of belief, no more than to be cawdor. group b [aside.] two truths are told, as happy prologues to the swelling act of the imperial (royal) theme-… if good, why do i yield to that suggestion whose horrid image doth unfix my hair and make my seated heart knock at my ribs, against the use of nature? present fears are less than horrible imaginings: my thought, whose murder yet is but fantastical, shakes so my single state of man that function is smother'd in surmise, and nothing is but what is not.