What makes a man

"I have almost forgot the taste of fears.The time has been my senses would have cooled. To hear a night shriek, and my fell of hair. Would at a dismaltreatise rouse and stir. As life weren't in't. I have supped full of horrors. Direness, familiar to my slaughterous thoughts, can not once start me.
-Macbeth (Act 5, Scene 5, lines 11-17)
He is saying that he feels guilty about killing all of those people. Macbeth is saying this in the context of after Seyton leaves and he is all by himself.
This quote shows manliness because, everyman must show his emotions at one point. Macbeth wouldn't be truely a man unless he felt guilty about killing these people.

"Be this the whetstone of your sword.  Let grief convert to anger.  Blunt not the heart; enrage it."
-Malcolm (Act 4, Scene 3, lines 268-269)
Malcolm is telling Macduff to turn the grief he is feeling over his family into anger. Malcolm tells him this because he wants Macduff to go and kill Macbeth, so he can be the king of Scotland.
This quote shows manliness because, Malcolm tells Macduff to show a little backbone and go and kill the person who took his family away from him.

I have no words. My voice is in my sword. Thou bloodier villain than terms can give thee out!

-Macduff (Act 5, Scene 8, lines 7-10)

Macduff is telling Macbeth that all the talking that needs to be done by him, will come from his sword. What he means by this is, that Macduff is planning on killing Macbeth in a sword fight.

This quote shows manliness because, mmost men don't back down from what they want. They go for gold whenever they get the chance, and don't like to take second place to anyone.

 

"Come, you spirits.That tend on mortal thoughts, unsex me here,
and fill me from the crown to the toe top-full of direst cruelty
Make thick my blood. Stop up th' access and passage to remorse"

-Lady Macbeth  (Act 1, Scene 5, Lines 47-51
Lady Macbeth is saying that she wants to turn into a man, so she can seem as manly as a man. She thinks that killing someone wil make her seem macho or manly like a man.

This quote shows manliness because, she thinks that killing somone would make her almost as bad as a guy. In the sense that guys are macho by killing someone.

 

"Not in the legions of horrid hell can come a devil more damned in evils to top Macbeth."

-Macduff(Act 4, Scene 3, lines 67-69)

When Malcolm and Macduff are talking about what a bad person Macbeth is, Macduff says that he is so bad that not even the devil himself is worse.

This quote shows manliness because, men are supposed to be powerful and show no mercy. Macduff saying this shows that Macbeth is both, and he took the chair over greed and envy.