Complex sentence: Losing his boyish looks but not demeanor, Morris spent most of the fifties in low-budget westerns, but he also appeared as a weakling Lieutenant Roget, one of the main characters, in Stanley Kubrick's "Paths of Glory" (1957).
Split into simpler sentences: Losing his boyish looks but not demeanor, Morris spent most of the fifties in low-budget westerns. He also appeared as a weakling Lieutenant Roget, one of the main characters, in Stanley Kubrick's "Paths of Glory" (1957).