It is a wise thing to be polite; consequently, it is a stupid thing to be rude. To make enemies by unnecessary and willful incivility, is just as insane a proceeding as to set your house on fire. For politeness is like a counter--an avowedly false coin, with which it is foolish to be stingy.
Arthur SchopenhauerEvery generation, no matter how paltry its character, thinks itself much wiser than the one immediately preceding it, let alone those that are more remote.
Arthur Schopenhauer