Dharmottara, one of the most outstanding commentators of Dharmakīrti, re-uses arguments in the Pramāṇaviniścayaṭīkā, his broad commentary on Dharmakīrti’s Pramāṇaviniścaya, from his independent essay, the Kṣaṇabhaṅgasiddhi. By analyzing contents of re-used arguments in the Pramāṇaviniścayaṭīkā, this paper clarifies Dharmottara’s intention of paraphrasing his arguments in his commentarial work on Dharmakīrti. I argue that, in terms of content, such arguments are original and never fit into Dharmakīrti’s own system. It can be said that Dharmottara has a clear intention to display his (...) new innovations not only in his independent monograph, but also in his commentarial work. For Dharmottara, a commentary on Dharmakīrti is a better place than an independent monograph for showing off his advanced notions, since it is only in a commentary that his ideas can stand out directly against those of Dharmakīrti. In this sense, Dharmottara writes his commentary strategically. At the end of the article I discuss the significance of composing independent monographs or essays in the intellectual history of medieval India in the case of Dharmottara. (shrink)