Metro-Goldwyn-Mayer is one of the major Hollywood movie studios, founded in 1924 through the merger of Metro Pictures, Goldwyn Pictures Corporation and Louis B. Mayer Pictures. In its heyday, MGM was the largest and most profitable of the studios. The studio cultivated an aura of glamour and sophistication, using as its motto, the Latin phrase "Ars Gratia Artis," which means "art for art's sake." Its well-known logo is that of a roaring lion's head within a golden circle containing the words of the motto. All MGM movies begin with a brief scene of the lion moving his head and roaring loudly.