Not when truth is dirty, but when it is shallow, does the enlightened man dislike to wade into its waters.

Ugly facts are tolerable; trivial ones are not. A serious mind will go into unpleasant territory without complaint and lose patience the moment the depth runs out, because the objection was never to the mud. Shallowness wastes attention in a way that difficulty and disgrace never do.

Apply that test to what you read, watch and argue about. Discomfort is a poor reason to leave a subject and thinness is an excellent one. If a conversation could have been finished in one sentence and is still going, your attention is being spent badly.