Swami Vivekananda's illuminative ideas on religion are spread over nearly 4200 pages of his Complete Works. This book containing eight lectures is a compilation from the same and serves as a small introduction to his voluminous writings, talks, and lectures on the subject.
Brave, bold men and women, these are what we want. What we want is vigor in the blood, strength in the nerves, iron muscles and nerves of steel, not softening namby-pamby ideas. Avoid all these. Avoid all mystery. There is no mystery in religion.
-Swami Vivekananda