Robert Langdon titled "Symbols of the Lost Sacred Feminine." It is later revealed in "The Lost Symbol" that "Symbols of the Lost Sacred Feminine" was published and created 'quite a scandal'. The book "Christianity and the Sacred Feminine", mentioned in "Origin" had reportedly been denounced by the Vatican, "which, in the aftermath, promptly became a bestseller," as quoted by the AI assistant Winston. Robert Langdon Professor Robert Langdon is a fictional character created by author Dan Brown for his "Robert Langdon" book series: "Angels & Demons" (2000), "The Da Vinci Code" (2003), "The Lost Symbol" (2009), "Inferno" (2013) and "Origin" (2017). He
Robert Langdon (book series) himself. In the book series, Langdon is himself an author of six (fictional) books: In the real book "The Lost Symbol" on page 8, a minor character, Pam, refers to the (fictional) "Symbols of the Lost Sacred Feminine" as creating 'a delicious scandal'. The series has sold over 120 million copies. The novels were a success around the world and became bestsellers, and soon adapted into films in which Ron Howard directed and produced 3 of 5 novels: "The Da Vinci Code" (2006), "Angels & Demons" (2009), and "Inferno" (2016), with Tom Hanks portrayed the lead character, Professor Robert Langdon,