The three filters of the wise leader

A collaborator comes to the wise leader and says:
- I have to tell you about the behaviour of one your team members
The wise leader:
- Let me stop you: Have you passed what you mean to tell me through the three filters test ?
- The three filters ?
- Your words must pass through three filters . The first is the truth. Have you checked that what you want to tell me is true?
- No, I have heard about it and ...
- Well, then you have certainly made it go through the second filter, that of goodness. Is what you want to tell me something good?
- No, quite the opposite ....
- Turning then to the third filter: is what you want to say useful?
- Useful? Not really ...
- Well... if what you want to tell me is neither true nor good nor useful, I prefer not to hear it. As for you, I advise you to just forget it.

Truth, Goodness, Utility.