Westcott and Hort revolutionized the way textual criticism is done. The most recognized Greek New Testaments today, the UBS 5th edition and the Nestle-Aland 28th edition, are largely derived from their text-critical methodology. One of their major contributions was the dethronement of the Textus Receptus from its place of primacy as the authoritative Greek New Testament. Westcott and Hort showed that the Byzantine manuscripts, which served as its primary texts, were secondary, late, and inferior in nature to other available manuscripts available. Dr. Daniel B. Wallace of the Center for the Study of New Testament Manuscripts (CSNTM) gives a biographical account of these two famous text critics, Brooke Foss Westcott and Fenton John Anthony Hort.