It appeared to the author of the work, the first half of which is herewith submitted to the public, that it was time to substitute a new mode of considering the life of Jesus, in the place of the antiquated systems of supranaturalism and naturalism. This application of the term antiquated will in the present day be more readily admitted in relation to the latter system than to the former. For while the interest excited by the explanations of the miracles and the conjectural facts of the rationalists has long ago cooled, the commentaries now most read are those which aim to adapt the supernatural interpretation of the sacred history to modern taste. Nevertheless, in point of fact, the orthodox view of this history became superannuated earlier than the rationalistic, since it was only because the former had ceased to satisfy an advanced state of culture, that the latter was developed, while the recent attempts to recover, by the aid of a mystical philosophy, the supernatural point of view held by our forefathers, betray themselves, by the exaggerating spirit in which they are conceived, to be final, desperate efforts to render the past present, the inconceivable conceivable. The new point of view, which must take the place of the above, is the mythical. This theory is not brought to bear on the evangelical history for the first time in the present work: it has long been applied to particular parts of that history, and is here only extended to its entire tenor. It is not by any means meant that the whole history of Jesus is to be represented as mythical, but only that every part of it is to be subjected to a critical examination, to ascertain whether it have not some admixture of the mythical. The exegesis of the ancient church set out from the double presupposition: first, that the gospels contained a history, and secondly, that this history was a supernatural one. Rationalism rejected the latter of these presuppositions, but only to cling the more tenaciously to the former, maintaining that these books present unadulterated, though only natural, history. Science cannot rest satisfied with this half-measure: the other presupposition also must be relinquished, and the inquiry must first be made whether in fact, and to what extent, the ground on which we stand in the gospels is historical. This is the natural course of things, and thus far the appearance of a work like the present is not only justifiable, but even necessary.