St.Ambrose of Milan on the Holy Spirit’s role in creation.

“So when the Spirit was moving upon the water, the creation was without grace; but after this world being created underwent the operation of the Spirit, it gained all the beauty of that grace, wherewith the world is illuminated. And that the grace of the universe cannot abide without the Holy Spirit the prophet declared when he said: “Thou wilt take away Thy Spirit, and they will fail and be turned again into their dust. Send forth Thy Spirit, and they shall be made, and Thou wilt renew all the face of the earth.”

St.Ambrose of Milan, On the Holy Spirit, Book II, Chapter V