Here is an interesting conversation between Socrates and an acquaintance:
Socrates, do you know what I just heard about one of your students?
Wait a moment. Before you tell me I'd like you to pass a little test. It's called the Triple Filter Test.
That's right. Before you talk to me about my student, let's take a moment to filter what you're going to say. The first filter is Truth. Are you absolutely sure that what you are about to tell me is true"
No. I just heard about it and...
Alright. So you don't really know if it's true or not. Now let's try the second filter - the filter of Goodness. Is what you are about to tell me about my student something good?
No, on the contrary...
So. You want to tell me something bad about him, even though you're not certain if it's true?
The man shrugged, a little embarrassed.
You may still pass the test though, because there is a third filter - the filter of Usefulness. Is what you want to tell me about my student going to be useful to me?
No, not really...
Well, If what you want to tell me is neither True nor Good nor even Useful, why tell it to me at all?