Now, the Annals of Tacitus is itself a questioned document; but even if we take it as unquestionable it is admittedly only a late statement of a narrative already made current by the Christists, the Annals being commonly dated about 120 C.E. Either Tacitus was founding on a Roman record of the Crucifixion or he was merely saying what Christists said as to the origin of their sect. If the latter, he supplies no historical basis. On the other hand, the unlikelihood of there being a Roman record of executions in Palestine ninety years before is so great that no Christian advocate now appears to affirm it. Tacitus in fact gives no sign of consulting official records, [31] his only traceable sources being previous historians, notably Suetonius. Thus Strauss's express ground for accepting the execution of a "Christ" by Pontius Pilate is really illusory; and when we further find him pronouncing that the Barabbas episode must be held fundamentally historical because it is "so firmly rooted in the early Christian tradition," [32] we are again compelled to reject his test. As we shall see, the Barabbas episode is unintelligible as history, but highly intelligible as myth. At the very outset, then, unverified assumptions are seen to be made by the biographical school as to what may confidently be taken as historical, even when, as in the case of Strauss, they affirm an abundance of myth. Where Strauss was rash, later rationalistic writers have been more so. My old friend, the English translator of Jules Soury's early work on Jesus, took for granted that behind legendary heroes in general there is always a nucleus of fact; but Soury, after postulating a large part of the gospel story as veridical, gave up a number of his own items. [33] As soon as he began to apply criticism, they were seen to be arbitrary assumptions. Equally arbitrary is the assumption of "some basis," made upon no scientific principle. The biographical school in general adhere at least to the trial and condemnation before Pilate, though many abandon as fiction the trial before the Sanhedrim, which indeed was abandoned as long ago as the third gospel, in favour of an equally fictitious trial before Herod. As is seen by M. Loisy, the trial before Pilate is for the historical critic the keystone of the tragedy story. If that goes, there remains only a highly composite body of teaching, with no identifiable historical personality to which to attach it.