"Oh, oh, no," Cameron says quickly, "I really don't feel madness is the answer here. Next thing you know, you'll be so far 'round the bend, you'll be calling everything normal." It's not like he's all this disdainful of the islanders, really; he just doesn't know how to handle them, the constant reassurance that he, too, will learn to be at peace here. This isn't his world, his time, anything like the way he grew up, and yes, he can adapt, it's an important trait if one's to stay ahead of the curve as he likes to believe he does, but there is a difference between keeping up and being calm. He's long managed to maintain, if nothing else, the external appearance thereof, often matched by the internal content, but here, it's all on the outside. Going mad sounds entirely possible.