Fifty years after he suggested the slogan 'Ask the man who owns them' to his client Thornber Chicks this ad man recently said he flicked the line from a 1901 ad for Packard Motor car Who is this?

Fifty years after he suggested the slogan 'Ask the man who owns them' to his client Thornber Chicks this ad man recently said he flicked the line from a 1901 ad for Packard Motor car Who is this?
Charles Saatchi