“打开天窗说亮话，脱了裤子谈思想”是李敖为自己的新著《上山·上山·爱》（以下称《上》）作的注。作者企图以公开自己的写作意愿来引导读者的阅读，以致“清者阅之以为圣，浊者见之以为淫”。后记中，作者声明其“黄色”的笔中有“红色”的韵，是要以“形而下”之器来论“ “Open the skylight speak light, take off the pants talk about thinking” is Li Ao for his new book “Shang Shan Shang Shan Ai” (hereinafter referred to as “on”) for the note. The author attempts to guide the readers’ reading by disclosing his own writing intention, so that “those who think it is holy and those who see it think it is prostitution.” In the postscript, the author states that the “red” rhyme in his “yellow” pen is based on the “metaphysical” device.