The book "Colonel R. G. Ingersoll Lectures, Volume I, including his answers to the clergy, his brother's graveside address, etc." is a collection of speeches by the eminent American orator and lawyer Robert Greene Ingersoll. This volume collects his most powerful and famous speeches, in which he unabashedly expressed his deep religious and moral convictions. Ingersoll openly criticizes the church, religion and worship, defending the principles of secularism and rationalism. This book not only invites the reader to a frank discussion about religious issues, but also makes you think about your own beliefs and attitude towards controversial moments in society. The Colonel R. H. Ingersoll Lectures is a memorable book that provokes discussion and palpable emotion in anyone who has the courage to openly express his point of view.