《菜根谭》总是以俗见雅、以小见大、以浊见洁、以淡见浓。它不要求你有多深的文化水平，只要你有一定的社会经历，就能轻松地理解它所说的道理。读起来会让人顿悟连连，有时候还不免要倒抽一口冷气。《厚黑学》是解放前讽刺官场弊病的轰动全国的一部力作。作者李宗吾提出的"厚黑"二字当时不绝于耳、脍炙人口。《厚黑学》被人们称为不可多得的奇书。"Tending the Roots of Wisdom" is featured by unfolding the elegant under the vulgar cover, showing the big picture through small details, revealing the pure under the dirty, and showing heavy color with light color.It doesn't require your education background. You will easily understand what it talks about as long as you have certain social experiences.It keeps inspiring you when you read it and sometimes takes away your breath."Thick Black Theory" is a masterpiece written before new China which talked about the maladies of the officials and made a stir in China.The idea of "Thick Black Theory" put forward by its author Li Zongwu was very popular and well known back then."Thick Black Theory" is considered a wonderful book hard to find.