Antonio Bacci was rector of the archdiocesan seminary of Florence when his exceptional knowledge of Latin caused him to be summoned to Rome in 1922 to join the office of the Secretary of State as an assistant, first to Aurelio Galli and then to Nicola Sebastiani, the chief Latinists of the Holy See. Bacci succeeded Sebastiani as Secretary of Briefs to Princes upon the latter's death in 1931. In the first half of the memoirs here translated, Bacci discusses his relationship with Popes Pius XI, Pius XII, John XXIII, and Paul VI during the period 1931