 The best known text from this period is the Brahmanical treatise Nyāya-sūtra (Aphorisms on logic) by Gautama, also known as Akṣapāda (c. 2nd ce), the actual redaction of which is thought by some to date to the third century ce. This work, which comprises five books, each with two chapters, addresses primarily questions pertaining to epistemology and debate, though it also touches on other topics. A few aphorisms found in the first chapter of the first and second books speak of inference, but much more attention is devoted to debate, essentially all of both chapters of Book 5, the entirety of the second chapter of Book 1, and several aphorisms in the first chapter of Book 1. Unfortunately, the laconic style of the aphorisms makes it hard to get a clear idea of what is intended.