" Indians like to classify, and the eighteen chapters of the Gita are said to break into three six-chapter parts. The first third, according to this, deals with karma yoga, the second with jnana yoga, and the last with bhakti yoga: that is, the Gita begins with the way of selfless action, passes into the way of Self-knowledge, and ends with the way of love. This scheme is not tight, and non-Hindu readers may find it difficult to discover in the text. But the themes are there, and Krishna clearly shifts his emphasis as he goes on using this one word yoga. Here he focuses on transcendental knowledge, there on selfless action, here on meditation, there on "

― Krishna-Dwaipayana Vyasa , The Bhagavad Gita