Panchadashi

"One of Vidyaranya’s great works is the Panchadashi. It is a masterpiece in Vedanta philosophy and spiritual practice. It contains fifteen chapters, which is why it is called the Panchadashi. The book by itself has no name; it is named after the number of chapters. Panchadasa is fifteen, and panchadasi is a work that contains fifteen chapters. These fifteen chapters are classified into three sections of five chapters each, as it is said that the Bhagavad Gita, containing eighteen chapters, is also classifiable into three sections: the first six, the middle six, and the last six. The first five chapters of the Panchadashi deal with Existence, or Sat in Sanskrit. The second five chapters deal with Consciousness, or Chit. The last five chapters deal with Ananda, or Bliss. Therefore, the book as a whole is an exposition of Sat-Chit-Ananda—the nature of the Absolute expounded in minute detail in Vidyaranya’s own novel way."

- Swami Krishnananda