 Several heresiological writers, such as Hippolytus, made little effort to exactly record the nature of the sects they reported on, or transcribe their sacred texts.Reconstructions of incomplete Gnostic texts were attempted in modern times, but research on Gnosticism was coloured by the orthodox views of those heresiologists.Justin Martyr (c. 100/114 – c. 162/168) wrote the "First Apology", addressed to Roman Emperor Antoninus Pius, which criticising Simon Magus, Menander and Marcion.