“Never again should we try to persuade the stupid person with reasons, for it is senseless and dangerous.” –Dietrich Bonhoeffer
“Monsters exist, but they are far too few in number to be truly dangerous; the most dangerous monsters are ordinary people ready to believe and obey without asking questions.” –Primo Levi
“Stupidity is a more dangerous enemy of the good than malice. One may protest against evil; it can be exposed and, if need be, prevented by use of force. Evil always carries within itself the germ of its own subversion in that it leaves behind in human beings at least...
“He has honor if he holds himself to an ideal of conduct though it is inconvenient, unprofitable, or dangerous to do so.” –Walter Lippmann
“There is nothing more dangerous than a person who wants to be left alone but is forced to get involved.” –Jeffrey Fry
“Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.” –Samuel Johnson