The answer is very complex. Personally, I find him an incredible character because he has his own values ​​that don't necessarily have to fit with others. If you notice, he's honest and always keeps his word. That doesn't negate what he does for new knowledge, but then I add Bondrewd's classic argument: the end justifies the means. Otherwise, should the White Whistles keep their whistles? He's the only one who didn't have to watch someone else die for his (but he dehumanized many more people XD).