In clear and persuasive language, the author has sketched the four great paths to God-realization, namely, Karma yoga, Bhakti yoga, Raja yoga and Jnana yoga.
If a piece of burning charcoal be placed on a man's head, see how he struggles to throw it off. Similar will be the struggle for freedom of those who really understand that they are slaves of nature.
-Swami Vivekananda