Ian Mcewan said this quote

Becoming drunk is a journey that generally elates him in the early stages—he's good company, expansive, mischievous and fun, the famous old poet, almost as happy listening as talking. But once the destination is met, once established up there on that unsunny plateau, a fully qualified drunk, the nastier muses, the goblins of aggression, paranoia, self-pity take control. The expectation now is that an evening with John will go bad somehow, unless everyone around is prepared to toil at humouring and flattering and hours of frozen-faced listening. No one will be.