Even though Hildegard of Bingen was already on the list of Catholic saints, she had not been officially canonized. So to remove all doubt, Benedict XVI extended the liturgical cult of St. Hildegard of Bingen, to the Universal Church, which automatically inscribes her in the catalogue of saints.
Hildegard of Bingen was from Germany. She's mostly known for her religious visions and prophecies. She lived in the XI and XII century, but even so, her message is still quite alive. The Pope has talked about her and her message in two general audiences.
Also, in coming months, the Pope is considering declaring her a Doctor of the Church for her high intelligence and feminine sensibility.
St. Hildegard was one of the most active women of her time. She wrote about theology and morals, but also about medicine and science. She even found the time to compose 78 musical pieces.
In 2010, when he delivered a series of talks on the great thinkers who have shaped the thought of the Church, Pope Benedict devoted two consecutive public audiences to the thought of St. Hildegard of Bingen, noting that her vision was unusually “rich in theological content.” The Pope said that the German mystic’s keen interest in the sciences was a natural outgrowth of her spirituality, since in her eyes “all of creation was a symphony of the Holy Spirit, Who is in Himself joy and contentment.”