Imitation of Christ
Swami Vivekananda evinced much interest in "Bhagavad Gita". It is said, "Bhagavad Gita" was one of his two most favourite books (another one was "The Imitation of Christ"). In 1888-1893 when Vivekananda was travelling all over India as a wandering monk, he kept only two books with him — Gita and Imitation of Christ.