O virtus Sapientiae is Hildegard's praise of Wisdom, whom she saw circling the whole of creation.
O power of Wisdom, you who, circling, encircled and embraced all things in one path that holds life.
Wisdom has three wings here: one flies on high, one rises from the earth, and the third flies everywhere. Nothing is outside her circling, and the song itself turns like a slow wheel.
In the concert its last note never quite ends. The drone carries on into the next song, so that Wisdom's circling flows straight into Mary's praise.
