PARIS — What does it mean to be "civilized"? Obviously, being highly educated, wearing a tie, eating with a fork or cutting one's nails weekly is not enough.

We all know that being "civilized" in this formal way doesn't prevent people from behaving like barbarians. Everywhere and at all times, being civilized means being able to recognize and accept the humanity of others, despite their different modes of living.

That may seem like an obvious point, but it is not universally accepted. The idea of dialogue between civilizations usually gets good press, but it is also sometimes mocked.