Which made me think of this:
"Don't be a dick" is the fundamental rule of all total social spaces. Every other [Wikipedia] policy for getting along is a special case of it. Although nobody on Wikipedia is empowered to ban or block somebody for being a dick (as this would be an instance of being a dick), it is still a bad idea to be one. So don't do it.
No definition of being a dick has been provided. This is deliberate. If a significant number of reasonable people suggest, whether bluntly or politely, that you are being a dick, the odds are good that you are not entirely in the right.
It's just an opinion, a webcomic, an essay on wikipedia. But I find value in it.