This is as true today as when the great Saint Augustine said it.  Look at how the Left absolutely loves Pope Francis when he is talking about climate change, and economic and social justice, and feel he has let them down when he speaks against abortion and gay marriage.  And the Right is just the opposite;  they love the Pope on issues of sexuality and ignore every word he says about climate change and economic justice.  But any religious leader worth the title must speak the truth not as they see it, but as they believe a higher power sees it.  And people can like it or not.