In recent decades, scholars of Buddhist philosophy have frequently treated the Trisvabhavanirdesa (TSN), or "Teaching of the Three Natures," attributed to Vasubandhu, as an authentic and authoritative representation of that celebrated thinker's mature work within the Yogacara tradition. However, serious questions may be posed concerning the status and authority of the TSN within Yogacara, its true authorship, and the relation of its contents to trends in early Yogacara thought. In the present article, we review the actual state of our knowledge of the TSN's possible origins, considering, too, the implications this may have for contemporary treatments thereof. [ABSTRACT FROM AUTHOR]; Copyright of Journal of Indian Philosophy is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)