It is impossible to defeat an ignorant man in argument. – William G. McAdoo

History shows that there is nothing so easy to enslave and nothing so hard to emancipate as ignorance, hence it becomes the double enemy of civilization. By its servility it is the prey of tyranny, and by its credulity it is the foe of enlightenment. – Lemuel K. Washburn, Is The Bible Worth Reading And Other Essays

You can be sincere and still be stupid. – Charles F. Kettering