Revealing the Implicit Truth

I honestly can't recall the text from which I recited this excerpt. I believe it reflects the writings of Yongming Yanshou as a major representative of a style of Chan Buddhism known as “scholastic,” or “words and letters” (wenzi) Chan. The Zongjing lu, Yanshou’s major work, is a testament to the solidarity between Chan and the larger, scholastic Buddhist tradition. From Yanshou’s perspective, Chan and the Buddhist tradition are not distinct entities in need of harmonizing, but two aspects of a single unity, complementing and fulfilling each other. The concept that Yanshou relies on to provide this unity is zong, what is referred to as the “deep structure” of Yanshou’s concept of mind— understanding truth as implicit in the principle of universal mind. In this regard, Yanshou refers to mind in terms such as “the deep abode of myriad good deeds,” “the profound source of all wisdom,” “the precious ruler of all existence,” or “the primordial ancestor of the multitude of spiritual beings.”

Alternatively, this may be from the writings of Guifeng Zongmi, who was a Tang dynasty Chinese Buddhist monk and scholar who is considered a patriarch of both the Huayan school and Chan Buddhism. Zongmi wrote a number of works on several Mahayana Sutras, Chan and Huayan, and he also discussed Taoism and Confucianism. His works are a major source for studying the various Chan schools of the Tang

Please help me identify the source if you can. Thank you.