Earlier I said the reader can skip the chapter on yoga in view of its being theoretical, though it is the most important chapter of the book. This is a book on the Spirit, not confined to any religion. The Spirit is universal. Its action on life is yoga. Why then skip the chapter on it? I also said the reader can dwell on that chapter if he is inspired by the earlier ones. As far as possible, in that chapter, I have presented yoga in the language of daily life. Still yoga is abstruse and obscure for the lay mind. Sri Aurobindo calls upon us to look on life as yoga.