大乘義章 6.45

6.45

次辨身神一異之義。於中有二：一身與神一、二身與神異。所言一者，有人說言：身即是神。所以者何？分折此身，更別求神不可得故。又受苦樂皆是其身，是故得知身即是神。所言異者，有人說言：身與神異，身相麁現，神即微細，五情不得，散心凡夫不能得見，攝清淨禪定之人乃能見之，故知是異。若不異者，身死之時神即隨滅；以其異故，身滅神在。十四難義，略之云爾。

Next, to differentiate the meaning of the identity or difference of the body and the spirit. Among these there are two: first, the body and the spirit are identical; second, the body and the spirit are different. Regarding 'identical': some people say that the body is itself the spirit. Why is this? Because when this body is analyzed, an additional, distinct spirit cannot be found. Furthermore, experiencing suffering and pleasure is entirely [the function of] this body; therefore it is known that the body is itself the spirit. Regarding 'different': some people say that the body and the spirit are different, for the characteristics of the body are coarse and apparent, whereas the spirit is subtle, imperceptible to the five sense faculties, and cannot be seen by ordinary persons with distracted minds, but can only be seen by those who maintain pure dhyāna-concentration; hence it is known that they are different. If they were not different, when the body died the spirit would perish along with it; because they are different, when the body perishes the spirit persists. The doctrine of the fourteen unanswerable questions is briefly summarized as such.