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.
When we come to nonattachment, then we can understand the marvelous mystery of the universe: how it is intense activity and at the same time intense peace, how it is work every moment and rest every moment.
-Swami Vivekananda