Oliver blinked at Selwyn warily, entirely unsure where his reaction had come from. Something seemed off about the man entirely, after the violent reaction upon entering and now this, too. But he wouldn't have looked like a fair man if he outright said how confused he was. And Oliver wanted to be able to see himself that way, which started with others agreeing.
"Perhaps," he mused aloud after a moment, "I should clarify. Being a hero doesn't always come from fighting. I'm trying to say that, those of you who feel that it really is the best way... I want to join you. For those of you who want to plan or bring in information, you have to be open to discussions instead of arguments, which is all we get. However," he added, holding up a hand in a sort of apologetic gesture, "if none of us are brave enough to fight when we have no other choice, we won't be the good guys. We won't help anybody. I want peace as much as you do, but when Death Eaters are clearly after us, we have to prepare for the worst. So anyone who doesn't want to fight, I'm sorry for whatever may have happened in your past, but eventually you'll be in a situation where you have to protect yourself. If that means we hold practices or training of some sort, I'll do it. But I need to know if anyone wants that. So get in touch with me by owl at some point, or grab me after the meeting."
Jack's suggestion wasn't a bad one, but Oliver was more interested in why he had tried to take Grimmauld Place on his own, and why he chose to attack Alice without preamble. So he took a moment but nodded. "If you've got your hands on it, go ahead. Or get people to watch him in there instead while we talk. Whatever."