Superman in the Marvel Universe. "This is a signal to all worlds that the Earth is ready for the highest form of war. "When Thor said those words, Fury didn't believe it. The arrogance of old civilization, he thought. Just the so-called "God" looked down on the potential of people. But he knew, or at least he thought, that he knew that with time and great effort, they could eventually become strong enough to defend themselves against any external threat. They didn't need permission from an alien to use the Tesseract.