Robert M. Berchman

Against the Christians (Ancient Greek: Κατὰ Χριστιανῶν; Adversus Christianos) is a late 3rd-century book written by Roman-Phoenician Neoplatonic philosopher Porphyry of Tyre, challenging the writings of Christian philosophers and theologians. Due to widespread censorship by Roman imperial authorities, no known copies of this book exist. Only through references to it in Christian writings criticizing it can its contents be reconstructed.