How we cite our quotes: (Act.Scene.Line) from the Folger Shakespeare Library
Quote #7
MACBETH
Bring forth men-children only,
For thy undaunted mettle should compose
Nothing but males. (1.7.83-85)
Macbeth tells his wife that she's manly enough to only give birth to male-children. Sorry, Macbeth, but you're the one responsible for the Y-chromosome. But this is an interesting look at Early Modern ideas about gender: "masculinity" and "femininity" seem to be more about behavior than any particularly sex characteristics.
Quote #8
MACDUFF
O gentle lady,
'Tis not for you to hear what I can speak.
The repetition in a woman's ear
Would murder as it fell. (2.3.96-99)
LOL, Macduff. He's so tied to a notion of female gentleness that he can't believe Lady Macbeth could even hear about murder, much less plot one. See, guys? Sexism hurts everyone.
Quote #9
LADY MACBETH
Are you a man?
[…]
O, proper stuff!
This is the very painting of your fear.
This is the air-drawn dagger which you said
Led you to Duncan. O, these flaws and starts,
Impostors to true fear, would well become
A woman's story at a winter's fire,
Authorized by her grandam. Shame itself!
Why do you make such faces? When all's done,
You look but on a stool. (3.4.70;73-81)
In other words, Lady Macbeth is (yet again) telling Macbeth that he's acting like a girl—or, in this case, an old women. Honestly, we're a little surprised that—since this is Shakespeare and all —he didn't just up and kill her instead of Duncan.