In The Making of a Bestseller, Dan Brown, author of the worldwide smash hit The Da Vinci Code, calls his literary agent Heide Lange an angel for his career.
「經紀人是我寫作事業的救命天使！」這是 2004 年以《達文西密碼》一書橫掃全球的丹・布朗在《暢銷書的故事》中，對其經紀人海蒂蘭的形容。