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Does anyone know the source of following paragraph?

The identical claim, expressed in two social contexts, may have different qualifiers. When talking among friends, you might say, “Lucé is the world’s finest restaurant.” When speaking to a group of French chefs, you might find yourself saying, “Lucé is an excellent restaurant, comparable to some of the best in France.”
Why did you say it differently? Perhaps because you expected a different critical scrutiny in the two groups.
Maybe because your confidence in the claim was strong enough for friends but not as strong among the most knowledgeable. In each instance, you communicated the extent to which you wanted to qualify your claim, to guard yourself by restricting the extent to which you are willing to be held accountable for the claim.