Most historians credit Samuel Reimarus (1694-1768) as the person to initiate the quest for the Historical Jesus. He was a German historian who sought to re-write the story of Jesus’ life in a naturalistic framework rather than the prevalent super-naturalistic one. Reimarus, however, was not without predecessors to lay the groundwork.
Before the Quest
Benedict Spinoza (1632-1677) argued against miracles to lay the foundations of a thoroughly naturalistic approach to the study of history. In his view, the historian bought to the study of history the certain knowledge that no miracles have ever occurred, rather than it being his/her task to discover if there has been a miracle. Pierre Bayle (1647-1706), the French philosopher and critic was renowned for his skepticism of historical religious claims. English Deism was also making its mark through such people as Lord Edward Herbert of Cherbury (1583-1648), John Tolland (1670-1720), Anthony Collins (1676-1729) – who was a friend and disciple of John Locke, and others whose influence extended into France and Germany in particular.
David Hume (1711-1776), the Scottish philosopher and historian, was composing his arguments against miracles about the same time as Reimarus. He conceded that miracles could occur, but argued that even if one had occurred we should never be entitled to conclude one had. As the Humean in-principle argument “has left an indelible impression on modern biblical scholarship” we shall have to return to discuss further Hume’s arguments. For now it enough to note that as a result of his writing, it is believed that no one is entitled to conclude that a genuine miracle (including fulfilled prophesy) has occurred on the basis of the evidence alone.
The milieu of the Enlightenment conspired to create a situation where a Reimarus was the natural consequence.
The First Quest
Reimarus’ “Fragments” were published posthumously by G. E. Lessing from 1774-8. In them he sharply distinguished between the Jesus of history and the Christ of faith. For him the Jesus of history was a real person, who lived in Palestine as a teacher of rational, practical religion. This Jesus did not think of himself as divine, but may have thought of himself as a political messiah, teaching the coming of the kingdom of God and Jewish liberation from Roman rule. The Christ of faith on the other hand was an “intentional, deliberate fabrication” created by the disciples who were motivated primarily by financial gain. His hypothesis was that the disciples stole the body of Jesus away from the tomb, invented stories of the resurrection and his imminent return, and attributed to Christ a theological significance Jesus never once claimed for himself. Much later they made Christ the Savior of the world.
The main thrust of this quest was to uncover whom Jesus supposedly really was, without the supernatural legendary accretion that supposedly developed after his death. Many different lives of Jesus were discovered in the late eighteenth and nineteenth century, including; the eleven volume work of Karl F. Bahrdt’s Ausfuhrung des Plan und Zwecks Jesu (1784-1792),  the four volume work of Karl H. Venturini’s Naturliche Greshichte des grossen Propheten von Nazareth (1800-1802), the two volume work of H. E. G. Paulus’s Das Leban Jesu (1828). Each to varying degrees sought to explain away Jesus’ miracles with clever naturalistic explanations, such as he was a medicinal healer, Lazarus was actually in a coma, and the disciples mistakenly thought Jesus was walking on water when he was actually only walking on a sandbank in the shallows.
It was D. F. Strauss that ended this school of thought with his book Das Laben Jesus, kritishe bearbeitet (1835). He dismissed the miraculous accounts as non-historical on the basis that they were inconsistent internally or else with other equally credible accounts, or contradicted by known natural laws. He went one step further however by rejecting the naturalistic explanations offered for them as well. For him, the shear number of miracles and the contrived explanations given to them, as well as the irreconcilable contradictions and unhamonizable chronologies, could best be explained with the idea that the gospels were never intended to be historical accounts. Rather they were sacred history that were meant to convey deep spiritual truths. The miracles were mythological, developed by Jewish messianic expectation and applied to Jesus for theological reasons. There was a virulent response to Strauss’s views in Germany at the time, but despite this the miracle-working Jesus of history was largely abandoned in academia.
Liberal theology in the latter half of the nineteenth century turned Jesus into merely a great moral teacher who was the model for humanity. Optimism that the man behind the myth could be found persisted until William Wrede published The Messianic Secret (1901). New Testament criticism had developed the two-source hypothesis, and by the turn of the century most scholars accepted the priority of Mark. Wrede succeeding in convincing others that even Mark, the earliest source where the historical Jesus was supposed to be found, was coloured with theological concerns. Thus, a biography of the historical Jesus was deemed futile.
Albert Schweitzer, the historiographer of this interesting period, says historians set out to find the historical Jesus believing they could bring him into our time as Teacher and Savior. He concluded, “He does not stay; he passes by our time and returns to his own.” William Lane Craig writes,
“. . . apparently unaware of the personal element they all brought to their research, each writer reconstructed a historical Jesus after his own image. There was Strauss’s Hegelian Jesus, Renan’s sentimental Jesus, Bauer’s non-existent Jesus, Ritschl’s liberal Jesus, and so forth. To paraphrase George Tyrell, each one looked down the long well of history and saw his own face reflected at the bottom.”
 Raymond Martin, The Elusive Messiah: A Philosophical Overview of the Quest of the Historical Jesus (Boulder, Colorado: Westview Press, 2000) p. 29.
 Charles Sanders Peirce, Values in a Universe of Chance: Selected Writings of Charles S. Peirce. Ed. Philip P. Wiener. (New York: Doubleday Anchor, 1958) p. 293. Cited by Timothy McGrew in “Miracles,” The Stanford Encyclopedia of Philosophy, forthcoming Spring 2010.
 And even if it could be, no one can establish if it was truly a result of super-natural agency. In many circles the miraculous is considered to be outside the domain of historical investigation.
 Reimarus: Framents, ed. C. H. Talbert, trans. R. S. Frazer (Philadelphia: Fortress Ress, 1970), See also Reimarus, “The Intention of Jesus and His Disciples” 1788
 Ibid., p. 151.
 An Explanation of the plans and aims of Jesus
 A Non-supernatural History of the Great Prophet of Nazareth
 The life of Jesus as the Basis of a Purely Historical Account of Early Christianity
 The Life of Jesus Critically Examined
 Albert Schweitzer, The Quest for the Historical Jesus: A Critical Strudy of Its Progress from Reimarus to Wrede (New York: Macmillan, 1957 ), p. 26.
 E. Renan, The History of the Origins of Christianity (1863)
 Bruno Bauer, Criticism of the Gospels and the History of Their Origin (1850-1851)
 William Lane Craig, Reasonable Faith: Christian Truth and Apologetics, 3rd ed. (Wheaton, Illinois: Crossway, 2003) p. 218 See also, George Tyrell, Christianity at the Cross-Roads (London: Longman, Green, 1910) p. 44