A lucid exposition of the wisdom enshrined in the Vedas, the Upanishads and the Bhagavad Gita together with a chapter on the general features of Indian philosophy.
Those who work at a thing heart and soul not only achieve success in it but through their absorption in that they also realize the supreme truth -- Brahman. Those who work at a thing with their whole heart receive help from God.
-Swami Vivekananda