"This supernatural soliciting Cannot be ill, cannot be good." (1.3.43-44)
"For in my way it lies. Stars, hide your fires.Let not light see my black and deep desires." (1.4.57-58)
"That tend on mortal thoughts, unsex me here, / And fill me from the crown to the top-full / Of direst cruelty. make thick my blood." (1.5.48-50)
Unsex me here!
Macbeth finishes his conversation with the witches, and comes to the conclusion that this prophecy cannot be bad if the witches are bringing him success but cannot be good knowing there is a hidden evil.
"... come thick night,... blanket of the dark." (1.5.57-60)
Macbeth has a desire to be king and in order to do that he needs to kill Duncan.
"... I have given suck and know/ How tender 'tis to love the babe that milks me./ I would while it was still smiling in my face,/ Have plucked my nipple from his boneless gums/ And dashed the brains out, I had sworn as you/ Have done to this." (1.7.62-67)
Lady Macbeth wants to rid the gender stereotypes so she can have more power and also wants to get rid of her guilt which is a "feminine" quality.
Lady Macbeth wants to be nothing but a figure of evil and cruelty. She desires to be in power over all and wants everyone to know that.
We have learned that Lady Macbeth once had a child, which is now dead. She would kill her child with the same will and power she would kill Duncan with.
"We will speak further. Only look up clear.To alter favor ever is to fear.Leave all the rest to me." -Lady Macbeth is trying to manipulate Macbeth into killing Duncan.