When he first contemplates the murder of Duncan, he says its "horrid image doth unfix my hair"
... suggestion, he asks in I.iii.134-136, whose horrid image doth unfix 
my hair... [DOC] [TLE] Direct Essays - Throne Of Blood Shakespeare Cawdor [PAR] Macbeth's tragic flaw, ambition, grew enormously when he heard of his 
designation as ... "Blood will have blood; they say blood will have blood.