Brahmasūtra Śaṅkara-bhāṣya（BSŚ）におけるanirvacanīya――avidyāとnāmarūpaに関して――

抄録

The concept of anirvacanīya may have already been used as a technical term of the non-dualism school in Śaṅkara’s time （756–772AD）, but there are clear differences in its usage between Śaṅkara and many later non-dualists. Śaṅkara did not use the word anirvacanīya on avidyā in the BSŚ. This contrasts obviously with the frequent use of anirvacanīya with regard to avidyā by many post-Śaṅkara non-dualists, and its use with sadasadbhyām is also characteristic. On the other hand, it is also characteristic that Śaṅkara used anirvacanīya only with nāmarūpa in the BSŚ, and in that case it was always accompanied by tattvānyatvābhyām. The aim of this paper is to clarify why Śaṅkara used anirvacanīya in this way, based on previous studies. Śaṅkara’s annotation on nāmarūpa is particularly important for confirming his view of the relationship between Brahman and the phenomenal world. Bhāmatī （Bhā） by Vācaspati Miśra （around 10AD）, the annotation for BSŚ, will also be compared with it.