From the movie, "The Avengers":
Loki: I come with glad tidings, of a world made free.
Nick Fury: Free from what?
Loki: Freedom. Freedom is life's great lie. Once you accept that, in your heart...
[he turns to face Selvig who's standing behind him and places his spear against Selvig's heart]
Loki: You will know peace.
[he uses his abilities to control Selvig's mind]