All I need to make a comedy is a park, a policeman and a pretty girl.

From “My Autobiography”:
“‘The public doesn’t line up outside the box-office when your name appears as they do for mine.’
‘Maybe,’ said Sennett, ‘but without the support of our organization you’d be lost.’ He warned: ‘Look what’s happening to Ford Sterling.’
This was true, for Ford had not fared very well since leaving Keystone. But I told Sennett: ‘All I need to make a comedy is a park, a policeman and a pretty girl.’ As a matter of fact I had made some of my most successful pictures with just about that assembly.’