While textual criticism developed into a discipline of thorough analysis of the Bible — both the Hebrew Bible and the New Testament — scholars also use it to determine the original content of classic texts, such as Plato's Republic. There are far fewer witnesses to classical texts than to the Bible, so scholars can use stemmatics and, in some cases, copy text editing. However, unlike the New Testament where the earliest witnesses are within 200 years of the original, the earliest existing manuscripts of most classical texts were written about a millennium after their composition. All things being equal, textual scholars expect that a larger time gap between an original and a manuscript means more changes in the text.

Does the Bible or Plato's Republic have more witnesses?