E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Omnia mutantur, nos et mutamur in illis, is by Nicholas Borbonius, a Latin poet of the sixteenth century. Dr. Sandys says that the Emperor Lothair, of the Holy Roman Empire, had already said, Tempora mutantur, nos et mutamur in illis.