Diaries are personal records of daily events and experiences that can provide historians with insight into past eras. A diary is a chronological record of the writer's life using daily entries. While some diaries were historically used for government or business records, modern diaries are more personal and intended to be private. Diaries differ from journals in that diaries contain daily entries while journals may have less frequent entries. Famous diaries that provide windows into history include Samuel Pepys' diary of 17th century English life and the Diary of a Young Girl by Anne Frank, which details her experience in hiding from the Nazis.