This chapter sets out the late eighteenth-century background to the emergence of ‘faith and reason’ as a composite pair, framed by the apparent Kantian disjunction between faith and reason. The author shows first that Kant’s denial of knowledge is far from a clear-cut statement of an either/or contrast of faith and reason, and, second, that it is the characteristically Kantian gesture of ‘making room’ that sets the agenda. The second section traces the relation of faith and reason as a dyadic pair in Schleiermacher, Hegel, Kierkegaard, and Nietzsche. A final section considers the legacy of the nineteenth-century model, notably the extent to which it provided the groundwork for the self-perception of the generation who came of age at the turn of the century that theirs was a time of crisis in which the composite model of ‘faith and reason’ split open into the distinctively twentieth-century model of ‘faith or reason’.