Speakers can create forms of ethos, pathos and logos to make their speech effective, which is exactly how Lady Macbeth and Macbeth accomplish this in Macbeth. Though both of these characters can be fairly effective speakers, Lady Macbeth takes the crown for being the best through her achievement of logos by using her child to create an emotional situation.
The instance that Lady Macbeth is the most effective during her speech to Macbeth, is during the section of her speech in which she creates pathos, by presenting a situation surrounding their presumably deceased child, “I would, while it was smiling in my face, /Have plucked my nipple from his boneless gums, /And dash’d the brains out, had I so sworn as you /Have done to this.” (I. vii.