The Apostolic Fathers are here understood as filling up the second century of our era. Irenaeus, it is true, is rather of the sub-apostolic period; but, as the disciple of Polycarp, he ought not to be dissociated from that Father's company. We thus find ourselves conducted, by this goodly fellowship of witnesses, from the times of the apostles to those of Tertullian, from the martyrs of the second persecution to those of the sixth. Curiosity is baffled, but faith and love are fed by these scanty relics of primitive antiquity. Yet may we well be grateful for what we have. These writings come down to us as the earliest response of converted nations to the testimony of Jesus. They are primary evidences of the canon and the credibility of the New Testament. -from the Introductory Notice