Answer:
3...Glamis thou art, and Cawdor; and shalt be 
What thou art promis'd; yet do I fear thy nature; 
It is too full o' the milk of human kindness 
To catch the nearest way: thou wouldst be great; 
Art not without ambition; but without 
The illness should attend it. What thou wouldst highly, 
That wouldst thou holily; wouldst not play false, 
And yet wouldst wrongly win