Here is the extract for the essay (from Act 2: Scene 2):

MACBETH

Ill go no more:

I am afraid to think what I have done;

Look ont again I dare not.

LADY MACBETH

Infirm of purpose!

Give me the daggers! The sleeping and the dead

Are but as pictures: tis the eye of childhood

That fears a painted devil. If he do bleed,

Ill gild the faces of the grooms withal,

For it must seem their guilt.

Exit.

A knocking is heard.

MACBETH

Whence is that knocking?

How ist with me, when every noise appals me?

What hands are here? Ha! They pluck out mine eyes!

Will all great Neptunes ocean wash this blood

Clean from my hand? No this my hand will rather

The multitudinous seas incarnadine,

Making the green one red.

Re-enter LADY MACBETH

LADY MACBETH

My hands are of your colour but I shame

To wear a heart so white!

(Knocking heard again)

I hear a knocking

At the south entry. Retire we to our chamber.

A little water clears us of this deed:

How easy is it then! Your constancy

Hath left you unattended.

(Knocking again) Hark! more knocking.

Get on your nightgown, lest occasion call us,

And show us to be watchers. Be not lost

So poorly in your thoughts!