The kind created by an author so devoted to not being mistaken that he's been legitimately worried about being taken in by arbitrary moral fashions and putting

The kind created by an author so devoted to not being mistaken that he's been legitimately worried about being taken in by arbitrary moral fashions and putting entire ideas off limits. http://www.paulgraham.com/say.html http://www.paulgraham.com/say.html tl,dr: You have to consider heresy seriously if you want to think clearly. Restrictions on expressing heretical ideas are harmful, though it's unsafe to disregard them where they exist.