Pope Pius XII declared St. Anthony a Doctor of the Church on January 16, 1946. His apostolic letter began as follows:
"Exult, happy Portugal, rejoice, happy Padua; for you have given birth for earth and heaven to a shining star, a man who has illuminated and still dazzles with a radiant light the whole earth, not only by holiness of life and fame of miracles, but by the splendor of his celestial teaching."