Platos 'the metaphysics of morals'. Rachael's sister did a degree in psychology. and this book was a standard part of the course. When she finished, she passed it on to Rach, and i read it.
We literally exist as a a moral society that was decreed 2400 years ago. Our entire civilisation and civil laws and rights, are based on the Sumerian system... from 5000 years ago. (all western civilisations are)
Anything since are just edits or manipulations.
Really does make you think, because you were never taught that. But once you know, you can check, and then you feel stupid for thinking we're the ones who had it all figured out. As though time did us a favour, that we are more advanced... spoiler, we aint. We've got worse, not better. The internet has allowed people to say what they want, without real consequence. Back in't day, if someone said to someone in person what i've seen people say online to each other, said person would get, shall we say, physically rebuked, perhaps leading to the end of their life. These days... where is the moral compass? Its on the individual, based on their parents moral compass... its a taught thing,a learned thing, not a granted a birth thing. And with the way things are... its not taught so much or an ingrained from a parents thing so much.. So yeah. The Metaphysics of Morals, by plato. It should be the first book everyone is taught as soon as they are capable of reading and thinking.