Finally entered this challenge!
"Sourire Demoniaque parce que c'est tout un jeu"
"Demonic Smile because this is all a game"
I felt this quote (I made it up) fits Sebastian's coldness. And I picked French because it fits Kuroshitsuji sooo well for some reason.
I know there was already a Sebastian entry, but I couldn't resist using this scan XD
Fonts from dafont (if you want the links ask and I will dig them up)