Religion writer Karen Armstrong reminds us: “At the very least, the Holocaust showed that a secularist ideology [can] be just as lethal as any religious crusade. ” ​ — The Battle for God — ​ Fundamentalism in Judaism, Christianity and Islam.
Penulis tentang agama Karen Armstrong mengingatkan kita, ” Setidak - tidaknya, Holocaust memperlihatkan bahwa ideologi sekularis [dapat] sama fatalnya dengan perang salib keagamaan mana pun. ” ​ — The Battle for God ​ — Fundamentalism in Judaism, Christianity and Islam.