The son fulfills his name 'Putra' when he gives joy and saves his parents from hell. In Kapila Gita, the lord as Kapila Muni, through self-knowledge, transports his mother turned disciple, Devahuti, beyond joy and sorrow and heaven and hell, into a state of pure Bliss.
Swami Tejomayananda further clarifies and beautifies this subtle teaching with lucid commentary.
This wonderful teaching can become our passport to Bliss.
I started reading the book immediately after the Bhagavadgita and, while it is a very involved book, feel enriched and will need further delving into Sankhya. Swamy Tejomayananda has done a wonderful job in giving the interpretation - chapter 2 is the essence of this book and really sets you in a journey of exploration...