In praise of - understaying one's welcome.

IN THE absence of preachers and other quacks, most of us take our moral and behavioural guidance from television.

Discretion is required, and citizens must avoid soap operas, reality shows and the news if they're not to plunge into chasms of ethical decay.

Films and dramas, preferably American, provide us with inspiring role models and valuable lessons on how to behave if our house is being attacked by helicopter-gunships.

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