Blasphemy isn't a dirty word. It just means to question supernatural claims of religion. That's almost a duty for intelligent, educated, science-minded, modern, honest people.However, religious leaders spent centuries executing or jailing those who voiced doubts. The Bible says any such blasphemer "shall surely be put to death. All the congregation shall stone him." In Ancient Greece, many of the first scientific thinkers were prosecuted for "impiety."...