Originally Posted by cherokeesam
And who *hasn't* been able to, or hasn't tried, to activate the Cube while it was in their possession?
Thor (carries it in a case back to Asgard at the end of Avengers)
. . .only evil people can manipulate the Cube.
Ergo: the Tesseract is, itself, an evil object.
Wait a minute--if Thor does not activate the Cube, how do they get back to Asgard? (Surely it's not that he depends on Loki to convey them there?) As I recall, they both turn a handle on the case and it's activated.