The Panchadaśī, a 15-chapter text by Vidyāraṇya (14th century), is a central work of Advaita Vedānta that systematizes and explains non-dual philosophy in a clear, practical way. Divided into three sections—viveka (discrimination), dīpa(illumination), and ānanda (bliss)—it explores the nature of the Self, the illusory play of Māyā, and the experience of supreme bliss through realization of Brahman. Revered as both a philosophical manual and a meditation guide, it remains one of the most accessible yet profound summaries of Advaita thought.