" To show the extent of some doctors’ dogmatism he used the phrase: ‘one might more easily teach novelties to the followers of Moses and Christ’. Elsewhere, he disparaged physicians who offered views on the body without demonstration to back up their assertions, saying that to listen to them was ‘as if one had come into the school of Moses and Christ [and heard] talk of undemonstrated laws’. Galen had little time for Moses himself, either. ‘It is his method in his books,’ wrote Galen, disapprovingly, ‘to write without offering proofs, saying “God commanded, God spake”. "

― Catherine Nixey , The Darkening Age: The Christian Destruction of the Classical World