This study discussed rhetoric and the philosophy of Christianity in Clive Staples Lewis’ Mere Christianity. It focused on how C.S. Lewis used rhetorical symbols, key terms, and clusters around them to induce his readers’ actions. The cluster criticism approach was adopted. Katz and Lazarsfeld’s 1955 Personal Influence theory explained how opinion leaders or rhetors indirectly establish the media (print) effects. The cluster criticism method analysis revealed how C.S. Lewis deliberately influenced readers using key terms and clusters.
Keywords: Christian philosophy, Clusters, Influence, Media, rhetoric, rhetorical symbols
