Howard Dietz disease. Howard Dietz Howard Dietz (September 8, 1896 – July 30, 1983) was an American publicist, lyricist, and librettist. Dietz was born in New York City. He attended Columbia College and then studied journalism at Columbia University. He also served as publicist/director of advertising for Goldwyn Pictures and later MGM and is often credited with creating Leo the Lion, its lion mascot, and choosing their slogan "Ars Gratia Artis". In 1942, he was made MGM's Vice President in Charge of Publicity. He held that position until his retirement in 1957. He began a long association with composer Arthur Schwartz when
Ars grammatica book contains one of the most complete lists of types of dactylic hexameters in antiquity, including the "teres versus", which may be the so-called golden line. The "Ars" of Diomedes still exists in a complete form (although probably abridged). It was first published in a collection of Latin Grammarians printed at Venice by Nicolas Jenson in about 1476. The best edition of Diomedes's "Ars Grammatica" is in "Grammatici Latini" vol. I by Heinrich Keil. Ars grammatica An ars grammatica () is a generic or proper title for surveys of Latin grammar. Extant works known as "Ars grammatica" have been written