Tempora mutantur is a Latin adage that refers to the changes brought about by the passage of time. It also appears in various longer hexametric forms, most commonly Tempora mutantur, nos et mutamur in illis, meaning "Times are changed; we also are changed with them". This hexameter is not found in Classical Latin, but is a variant of phrases of Ovid, to whom it is sometimes mis-attributed. In fact, it dates to 16th-century Germany, the time of the Protestant Reformation, and it subsequently was popularised in various forms.