These lectures, delivered at Princeton Theological Seminary in February, 1914, under the title of "The Christian Faith in the Light of Modern Knowledge," have now been revised with the addition of new matter. They were written in the conviction that what Christianity has most to fear is ignorance and prejudice and presupposition; that the Christian Faith, with its motto, "Come and see," welcomes the fullest investigation; and that every advance in knowledge, whatever temporary perplexities it may occasion, will in the end reveal more fully the intrinsic excellence of the Christian religion and establish more firmly its sovereign claim to be from heaven and not from men. W. H. J. _Lincoln University, Pa._ Contents CHAPTER I WHAT IS THE CHRISTIAN FAITH? Need of a definition 15 I. The Christianity of the New Testament Writers 16 Their emphasis upon the Passion and Resurrection 16 Their emphasis upon the Person of Christ 20 II. Primitive Christianity and Pauline Christianity 21 Was Paul the Founder of Christianity? 21 Lines of connection between Paul and the Primitive Apostles 22 III. The Christianity of Jesus and of Paul 26 Harmony in their Ethical Teaching and in their blending of Doctrine with Ethics 27 The Christological passage, Matthew xi. 25-30: its exegesis and its alleged isolation 35 The Passion narrative in Mark: views of Bousset 41 Self-authenticating contrasts in the Character of Christ 43 IV. The Dilemma of Historical Criticism 44 Jesus as viewed by the Liberal and the Radical Schools 44 The Dilemma of Liberal Criticism 45 Lessening Significance of a merely human Jesus 49 Harnack and von Dobschütz on the "Double Gospel" 53 The Essence of Christianity 54 CHAPTER II THE CHRISTIAN FAITH AND MODERN SCIENCE The Darwinian Theory: inferences unfavourable and favourable to religion 56 Evolution and the Copernican Revolution 60 I. The Method of Evolution: the biological discussion 61 State of opinion after fifty years of Darwinism 61 Laws of Variation and Heredity 62 Weismann's theory of Germinal Selection 63 Significance of the variety in opinions 65 II. The Meaning of Evolution: the philosophical discussion 66 1. Mechanism and Design 66 In the organic world in general; the fitness of the environment 67 In the organic world including man 70 2. Preformation and Epigenesis 73 Preformation and the infinite regress 74 The Origin of Life: various theories 75 The Origin of Man as viewed from different standpoints 78 The _Generatio Æquivoca_ 80 III. Theism and Evolution 82 The causal demand 82 Theism and the ideas of Continuity and Progress 83 Religion and scientific advance 85 CHAPTER III The Christian Faith and Psychology The Psychology of Religion: its precursors and founders 89