Last Sunday Jon Snow stood up to those mulling his execution in the Season 4 premiere, and took another step toward being a leader among his brothers at Castle Black. Jon knows what he must do to protect the realm, but Kit Harington tells Zap2it that he can’t be a hero straight away.

“What I want to do with Jon is that he can’t be a hero straight away, and that’s what the writers are doing as well. He has to learn. I think this season he really starts learning. He starts being able to control his temper more, which he’s not been so good at in the past.”

Kit talks more about that control in another new interview with The Daily Beast. Kit says that if the confrontation had taken place a few seasons ago, it would have gone much differently.

“He’s learned to control himself. If he’d been placed in that position in the first season he’d probably explode, like in the scene where he attacks Alliser Thorne and tries to knife him. This is a very different Jon. He’s in front of the council and basically says, “Kill me, or get on with it,” and doesn’t lose his temper. That’s what he’s learned from essentially being a spy for two years.”

As Jon snow continues to learn throughout Season 4, Kit reveals that his biggest development will come at the end, which sees Jon become a cold person.

“I think the biggest development that’s ever happened to him happens at the end of this season. There’s a specific scene at the end of this season where you see a real coldness in him, and that comes from various things that have happened this season—not least by the start of the season where we learn that his whole family is dead. He really chooses his side and grows up in a way where there’s no sentimentality left. I think he’s been quite sentimental in the past about things, but this season, there’s no fucking around with it. By the end, he’s a cold person. “

For more from Kit’s interview with Zap2it including how Jon feels about Alliser Thorne and Janos Slynt, click here. For more from Kit’s interview with The Daily Beast including Jon Snow’s luck with the ladies, and being a foil to Theon Greyjoy click here.