Anyone who will stand up in front of a group of friends, much less the United Nations General Assembly, and tell others how they should conduct their lives and affairs, all while behaving in a manner inconsistent with his advocacy, is a hypocrite and thus non-credible. That is as true for the family-values touting Republican congressman who bangs his married administrative assistant as it is for a film icon who preaches carbon consciousness while living an flagrantly carbon-spewing lifestyle.
The famous do not get a pass for fame: they get higher standards than the rest of us. That is the price of public influence.