觀音玄義 2.44

2.44

又問：感、應，為一？為異？若一，感即是應，凡便是聖；若異，則不相關。答：不一、不異，而論感應。

Question again: Are stimulus and response one, or are they different? If they are one, stimulus is itself response, and the ordinary being would be the sage; if they are different, then they are not connected. Answer: It is in terms of non-identity and non-difference that stimulus and response are discussed.