These Boston lectures from the winter of 1871–72 meet modern doubt head-on, not with sectarian polemic, but with a confident appeal to the living foundations of Christianity. In essays by leading religious thinkers, the volume asks how faith can endure in an age of science, skepticism, and rapid social change, and whether the New Testament must be read as literal history to remain true. It argues that honest inquiry need not destroy belief: modern science, far from becoming merely atheistic, has grown more humble and reverent before mystery, while Christianity can welcome reason, freedom, and public worship without coercion or superstition. At the center is Jesus Christ—his personality, teachings, and historical mission. The book presents him as the fulfillment of Hebrew hopes, the soul of human knowledge, and the power that can unite compassion, social progress, and practical wisdom. It also confronts the Gospel's "mythical element," rejecting rigid literalism while insisting that legend and symbol do not cancel spiritual truth. In place of old miracle-defenses, it offers a faith grounded in history, freedom, and the transforming life of Christ. This edition has been fully restored with modern typesetting, custom cover design.