This volume presents the full transcript of an 1875 public debate between B. Grant and Charles Bradlaugh on the fundamental question: "Is Atheism or is Christianity the True Secular Gospel, as tending to the improvement and happiness of mankind in this life by human efforts?" The debate offers a fascinating glimpse into the intellectual landscape of the late 19th century, capturing the arguments and counter-arguments surrounding faith, reason, and the role of religion in society. Bradlaugh, a prominent atheist and political activist, defends the principles of secularism and challenges the foundations of Christian belief. Grant, a Christian apologist, argues for the enduring value and positive influence of Christianity on human progress and well-being. This historical document offers valuable insights into the historical conflict between religious belief and atheistic thought, and the continuing relevance of these debates in contemporary society. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.