“Fair is foul, and foul is fair.”
— Witches, 1.1.12

“Nothing in his life
Became him like the leaving it.”
— Malcolm, 1.4.8–9

 “Is this a dagger which I see before me,
The handle toward my hand?”
— Macbeth, 2.1.42–3

 “We have scoteched the snake, not killed it.”
— Macbeth, 3.2.15

“After life’s fitful fever he sleeps well.”
— Macbeth, 3.2.24–5

 “It will have blood, they say: blood will have blood.” 
— Macbeth, 3.4.152–53

“Double, double, toil and trouble;
Fire burn, and cauldron bubble.”
— Witches, 4.1.10–1 

“I’ll make assurance double sure.”
— Macbeth, 4.1.93

“At one fell swoop.”
— Macduff, 4.3.256

“Out, damned spot! out, I say!”
— Lady Macbeth, 5.1.31 

 “What’s done cannot be undone.”
— Lady Macbeth, 5.1.62–3

 “Tomorrow, and tomorrow, and tomorrow.”
— Macbeth, 5.5.21