licentious expressions and perverse speech ? 閑先圣之道，距楊、墨，放淫辭，邪說(shuō)者不得作。(《孟子·滕文公下》) I address myself to the defense of the doctrines of the former sages,and to oppose Yang and Mo. I drive away their licentious expressions,so that such perverse speakers may not be able to show themselves.