system
A chat on subreddit /r/PoliticalCompassMemes
human
Mostly because it is impossible to separate morals, culture and religion, as they are all parts of the same thing.
gpt
I'd say it's down to the fact that certain truths are universal whether inside or outside of religion, and across multiple religions. 

Murder is bad, theft is bad, even affairs are frowned upon even if they aren't illegal. Most of these laws exist across cultures even before cultures started to meet and trade.