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

Now I want to start playing again... oh, I'm such a hardcore gamer... :D... now I want to fully complete a playthrough as the Dark Side, although I don't really feel like it :D... but what I like most about the Dark Side is that if someone is rude to you, you can give them a piece of your mind, but if you're on the side of light, everything has to be done "peacefully."
I want to somehow try to prevent Joly from joining me, if that's possible, I just want to explore the Temple alone...

Anyway, I'm going to kill everyone... Ha-ha-ha, Dart Revan has returned.... :D