《汉书·传·叙传上》
现在你生活在太平盛世却谈论战国的事情，被传闻迷惑而怀疑眼见的事实，想以土丘的标准去度泰山，想以细流的深度去测量深渊，也是不合道理的。 
今子处皇世而论战国，耀所闻而疑所觌，欲从旄敦而度高乎泰山，怀氿滥而测深乎重渊，亦未至也。 
Now that you live in peace and prosperity and talk about the Warring States period, you are confused by rumors and doubt what you see, and you want to measure Mount Tai by the standard of a mound, and measure the abyss by the depth of a stream, which is also unreasonable. 