
Now the Inquiry into Brahman: Opening the Brahmāsūtra
A Brahmāsūtra manuscript opens with the famous first aphorism — athāto brahmajijñāsā — and the compact chain of reasoning that launches the Vedānta school.

This manuscript presents a section of the *Brahmasūtra*, the foundational Vedāntic text attributed to Bādarāyaṇa (also identified as Vyāsa), specifically comprising the first four *pāda*s of the first *adhyāya*. The text exhibits the characteristic *sūtra* style—extremely condensed aphorisms (*sūtra*s) accompanied by traditional *vyākhyā* (commentary) sigla such as "व्या० सू०" (Vyāsa-sūtra), indicating its transmission within a scholastic commentary tradition. The content initiates the inquiry into Brahman (*brahma-jijñāsā*) and systematically establishes Brahman as the sole cause of origin, sustenance, and dissolution of the universe through scriptural reasoning (*śāstrayonitvāt*), refuting rival ontological positions including Sāṅkhya *pradhāna* and atomic theories. Notable features include the invocation of authoritative teachers such as Jaimini, Āśmarathya, Auḍulomi, and Kāśakṛtsna, reflecting the text's role as a locus of inter-sectarian philosophical debate, and the presence of *adhikaraṇa* (topical) divisions marking the structural hermeneutics of Vedāntic exegesis.