Final answer:
The quote is from Shakespeare's play Macbeth, spoken by Macbeth himself in Act II, Scene II.
Step-by-step explanation:
The quote 'Mad as the sea and wind when both contend/Which is the mightier. The quote is from Shakespeare's play Macbeth, spoken by Macbeth himself in Act II, Scene II. In his lawless fit,/Behind the arras hearing something stir/Whips out his rapier and cries 'A rat, a rat,'/An in this brainish apprehension kills the unseen good old man.' is a line from Shakespeare's play Macbeth. It is spoken by Macbeth himself in Act II, Scene II.
The quote is from Shakespeare's play Macbeth, spoken by Macbeth himself in Act II, Scene II. Macbeth becomes paranoid and delusional after killing King Duncan, and in this quote, he sees a dagger floating in front of him and hears noises, which leads him to mistakenly believe there is a rat that needs to be killed.