Lady Macbeth: His fight was madness. When our actions do not , our fears do make us traitors.(act4,scene2,lines 3-4)
Macbeth: Then live Macduff; what need I to fear thee? (act 4, scene 1, line 8) Macbeth feels like that he cannot be harmed so why would he kill Macduff if he cannot kill Macbeth.
Lady Macbeth: My hands are of your color, but I shame to wear a heart so white. (act 2, scene 1, lines 63-64)
Macbeth: I am afraid tot think what I have done; look on't again I dare not. (act 2, scene 2, line 50-51) He loves his king so he does not want to kill him, but at the same time Macbeth him self wants to be king.
Macbeth: To act in safety. There is none but he worse being I do fear: (act 3, scene 1, 54-55) Macbeth wants to kill Banquo because he is scared that his sons will be kings.
Lady Macbeth: Sit worthy friends, my lord is often thus and hath been from youth. ( act 3,scene3,lines 53-54)