Everything is too long a list to work with. No one knows everything about anything. No one knows something about everything. Everyone knows something about something. Anyone could be the world's foremost expert on something. Anyone who thinks that just because they didn't already know a thing, it must not be true or important, is an idiot.
War will exist as long as any community desires to impose its will on another community more than it desires peace. Coercive men see only slaves and rivals in the world. If the meek refuse war to defend themselves against coercion, then they deserve to be slaves. Peace-lovers can only have what they love by being better at what they hate than those who love war. There is no road to peace that does not pass through war.
A ruler's friend's judge him by his achievements, his enemies by the means he used to obtain them.