Regarding his oft-cited quote stating that actors are cattle; as paraphrased and quoted in "Town Called Hollywood: Director Pleads Off Poundage" http://www.mediafire.com/view/ix2ammmxkb3flqx/Screen%20Shot%202018-09-11%20at%2012.56.17%20AM.png by Philip K. Scheuer, in The Los Angeles Times (30 May 1943).
Context: [T]he director passed off the phrase as one of his "Machiavellian quips," not to be taken seriously. "Let us say, rather, that actors are a necessary evil," he cautioned, with a straight face. "As a matter of fact, I couldn't work if I weren't on friendly terms with them; I'll bend over backward every time. Besides, I get into each picture I make, if only for a couple of seconds—so I'm probably a frustrated actor at heart myself."