▽Publicis & Hal Riney ●03/06 10:26 Menu Beliefs Work Leadership Contact WHAT MAKES A GREAT AGENCY? It goes without saying that great agencies don’t become great because someone rubbed a magic lamp and wished for it. No, the secret sauce of agencies that consistently produce inventive, famous and effective creativity is their culture. The common denominator is that they have a set of beliefs, a way of working and an environment that