Vash raised an eyebrow at Archer — the man’s second response not only [i]still[/i] not answering his question, but also landing even farther from said question than the first, leaving the gunman rather confused as to what Archer could’ve meant by it. 

He didn’t even have time to ask about it, though, before Sorin butted in. Vash grit his teeth slightly as he listened to the vampire’s words, as hearing such lack of empathy for the dead never did sit well with him. Recognizing that he at least made a strong argument, though, Vash paused for a moment to think of a response. 

“I disagree.” he replied simply, but sternly. “Just because killing is the easy option, that doesn’t make it acceptable.” he argued. “There’s always a way to resolve conflicts without resorting to killing. The hard part, sometimes, is finding it.” he continued, though his voice had started to sound less certain and stern and a bit more thoughtful, as if Sorin’s words were really making him dig deep for the answers. “But, we have to at least try to find a way. Because, no one has the right to take the life of another.” 

Vash then glanced towards Archer, and sighed quietly as he watched him continue trekking across the trail. “For example,” he spoke up, starting to follow after Archer while still directing his words towards Sorin. “Our objective is to ‘defeat the legendary dragon’. We have no [i]need[/i] to kill it. Not for survival — as it won’t try to harm us unless we attack it — and not to complete the challenge, as we were only told to ‘defeat’ the dragon, and we weren’t specifically told to ‘kill’ it.” he explained, eyes locked on Archer as he spoke, as if now directing his argument to both of them. “Killing it might be the easy way to complete the challenge, but it isn’t the only way. We just need to figure out a non-lethal way of subduing it.” he continued. "And..." his expression then started to lighten up a bit. "I think the preservation of life is worth the extra effort, don’t you?” he finished, smiling a bit nervously at the two of them.