hope

The church is in the hope business. We of all people ought to be known most for our hope; because our hope is founded on something deeper than human ability or wishful thinking. Martin Luther King was fond of citing Reinhold Niebuhr's distinction between hope and optimism. Optimism believes in progress; that circumstances will get better. Hope, however, is is built on the conviction that another reality, another Kingdom, already exists. And so hope endures when hype fades.

John Ortberg (from here)