Notes of a series of inspiring class talks of Swami Vivekananda delivered during his seven weeks' stay at Thousand Island park, U.S.A. on various religious and philosophical topics and recorded by Miss S. E. Waldo, an American disciple.
The book one must read to learn natural sciences is the book of nature. The book from which to learn religion is your own mind and heart.
-Swami Vivekananda