Darkness or Light? Philosophy in Knights of the Old Republic.

They laugh at me – it’s a pity I can’t kill them.
It’s easier for a Jedi guardian to kill a Malak.

I was talking about the fact that you can say it to them, not that they will believe you :D :D
I was especially amused when a couple of Sith demanded that you make them laugh, you tell them that you are Revan, and they say: "Yeah, you're really funny (paraphrased), you can go now)
See, monarch, how harmful it is to wear a mask all the time?;)
And yes, I always enjoy killing Uthar and Yutura at the same time; it’s a very pleasant feeling of power.
In general, Korriban is a paradise for both Jedi and Sith – you can gain a lot of points and experience for both sides.