How far should freedom of speech and that is to say speech that borders on, even verges into, civic impiety, ? how far should such speech be tolerated?

言论自由的界限,确切的说是临界言论，甚至是跨界谈到公民渎神的言论，这类言论的容忍界限为何？

耶鲁公开课 - 政治哲学导论课程节选