"I know what you're up to: people should rather keep quiet than talking to you and insulting you. But I think, you should be quiet by yourself know, or else you will most likely add to your own misery."
What I can't figure out.. is Dogbert feeling that Dilbert is down,
or does he just end the conversation?
The second option leaves more open ends:
- maybe Dogbert wants Dilbert to get off of that topic, so he
can feel better in his leisure-time.
- or he shows some of his cynical humor, saying that he is not
ready to listen to his master whining.
- or maybe he just means, "this can be set back to anybody, and
I prove it whilst doing it to you."