The provided text is a "Publisher’s Note" introducing a collection of letters by Swami Vivekananda. It begins with a powerful tribute from French scholar Romain Rolland, who compares Vivekananda’s words to the stirring music of Beethoven and Handel, noting that even decades later, his writings possess an "electric" and "burning" energy.

The publisher emphasizes that Vivekananda was as brilliant a writer as he was an orator. Though his numerous letters were originally addressed to specific disciples and friends, their universal potency remains undimmed by time. This compilation, drawn from his Complete Works, aims to share his "roaring flame" with a modern audience. The note concludes that if readers can embrace the spirit of these words, their lives—and the nation—will be transformed.