Fashioning the Body: Versions of the Citizen, the Self, and the Subject

The Good Person of Szechwan reaises an interesting question.  Being generous is one of the things that one might take for granted as something one should "always" do.  But should one draw the line at being taken advantage of? I've posted a like to an article on morality in which the writer says that telling the truth is something that everyone should "always" do, and anyone who even questions that is clearly a bad person.  But- to run the risk of being called a "bad" person- surely a situation can be hypothesized in which lying is permissible,  what about people who his Jews from Nazi's during the holocaust and of course denied hiding them when the gestapo came to search their house? surely that lie is allowed.  

http://www.chabad.org/library/article_cdo/aid/36423/jewish/What-is-Morality.htm