Scene 3

• Sir Andrew and Sir Toby make merry late in the evening, accompanied by Feste's songs but Maria warns them about the noise they are making and that they are in danger of being turned out of the house
• SA and ST revelry is interrupted by Malvolio, but they ignore him then Malvolio implicates Maria in the rowdiness and threatens to tell Olivia
• Maria takes on the task of revenge on Malvolio and makes a plot to humiliate him by forging a letter and pretending Olivia is in love with him
• Sir Toby tells Sir Andrew to send for more money and finally decides that is too late to go to bed like Maria advised
• Malvolio's interruption of the festivities draws up battle lines between the hedonistic philosophy of Sir Toby and Sir Andrew's view of life with the puritan austerity of Malvolio's behaviour
• Malvolio has a professional responsibility as a steward and to keep and eye on the household while SA and ST are devoted to drinking and eating
• There is a clash between restraint and excess, and carefulness and extravagance
• Feste's song is about uncertainty of life and morality, summarising play