Jnana Yoga (The Yoga of Knowledge) is a book of lectures by Swami Vivekananda as transcribed by Joseph Josiah Goodwin. The lectures were delivered mainly in New York and London. These lectures were recorded by Goodwin, a professional stenographer, who later became a disciple of Swami Vivekananda. Jnana yoga is one of the types of yoga mentioned in Hindu philosophies. Jnana in Sanskrit means ""knowledge""; the word is derived from Sanskrit jna to know. In the book, Swami Vivekananda describes ""knowledge"" as the ultimate goal. According to Swami Vivekananda, freedom is the object of Jnana Yoga.