St. Albert the Great (1200–1280), also known as Albertus Magnus, was a German Dominican friar, bishop, scholar, and one of the most influential figures of the medieval Church. Renowned as a "Doctor Universalis" (Universal Doctor), he was a polymath who made significant contributions to theology, philosophy, and the natural sciences. A pioneer in integrating Aristotelian philosophy with Christian theology, St. Albert was a mentor to St. Thomas Aquinas and a key figure in the development of Scholasticism. His vast knowledge spanned subjects such as biology, chemistry, astronomy, and ethics, earning him recognition as the patron saint of scientists. Declared a Doctor of the Church in 1931, St. Albert's legacy continues to inspire those who seek harmony between faith and reason.

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Saint Didacus of Alcalá (c. 1400–1463), also known as Diego de San Nicolás, was a Spanish Franciscan lay brother celebrated for his humility, charity, and deep spirituality. Born in San Nicolás del Puerto, Andalusia, he initially lived as a hermit before joining the Franciscan Order. Didacus served as a missionary in the Canary Islands, where he was appointed guardian of the Franciscan community on Fuerteventura, an exceptional role for a lay brother. In 1450, he traveled to Rome for the canonization of Saint Bernardine of Siena and remained there to care for friars afflicted by an epidemic, reportedly performing miraculous healings. After returning to Spain, he spent his remaining years in contemplation and service, passing away in Alcalá de Henares on November 12, 1463. Canonized in 1588, he is the patron saint of the city of San Diego, California, which was named in his honor.

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Join Dr. Ben Akers and Dr. Carl Vennerstrom as they discuss St. Leo the Great, who served as pope during the tumultuous time of the Council of Chalcedon. With the heart of a pastor, St. Leo modeled Christian charity amidst the debates and controversies on the divine and human nature of Jesus. He blessed the Church by using his gift of administration to create a healthy bureaucracy where brotherly love could flourish.

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