In the level Smells Like Napalm, Tastes Like Chicken, you know there is a funny one-way ticket hole where our beloved Durandal is keeping the Amazing Scorching Machine (aka Tozt).
In that homely warm corner, the wickedest AI ever delights us with some [rather discouraging] words, and finally says:
Vale,
Durandal
That closing formula kept me puzzled quite a long time until, by sheer coincidece, I realized (while trying to sleep XD ) that he was talking Latin again.
"Vale" means "farewell", or if I recall correctly something along the lines of "keep yourself healthy."
— Nova