I put this under "cryptic", but I suppose it can also be "inspirational". I know I didn't put all of L's face here. I assure you that was intentional. It makes him mysterious.
The picture is from the novel (Death Note: Another Note, the Los Angeles BB Murder Cases). The one with him and Naomi Misora. Anyway, I came up with the quote myself, so I'm still not sure if it really works.
After all, some of you/us may believe that some truths are better off kept in the dark. What do you think?
(Personally, I think that whatever L says is law. *impish smile*)