"Kill them all, God will know His own."
Bishop of Angouleame, when asked how to tell 'true believers' from 'heretics', during the Albigensian Crusades
Most people wouldn't know music if it came up and bit them on the ass.
As a method of sending a missile to the higher, and even to the highest parts of the earth's atmospheric envelope, Professor Goddard's rocket is a practicable and therefore promising device. It is when one considers the multiple-charge rocket as a traveler to the moon that one begins to doubt ... for after the rocket quits our air and really starts on its journey, its flight would be neither accelerated nor maintained by the explosion of the charges it then might have left. Professor Goddard, with his "chair" in Clark College and countenancing of the Smithsonian Institution, does not know the relation of action to re-action, and of the need to have something better than a vacuum against which to react ... Of course he only seems to lack the knowledge ladled out daily in high schools.
New York Times Editorial, 1920
By the way, many of the quotes are from the unix fortune file (heavily culled to only include my absolute favorites). Some are from Usenet, some are from email, and other are simply from the real world.