You're making it dangerous? That's honestly kind of doing it for me.

[Drinking generally does bad things for L, bringing out the very worst in him even when he's not going from sober, frustrated and bored to far too drunk.]

Curiosity, as vice, is a myth pushed by those intent on keeping people ignorant and in line. The truth wants to be known, and curiosity is the ingrained answer to being told that inquiring further is verboten. They're told that to be curious is to be a bad human, when... it is just what it is to be human.

[Get him another drink before he derails again. A detective has lots to say about curiosity.]