Going back four hundred years, it would have never occurred to anyone that humans shouldn’t be slaves or that the environment will be irrecoverably destroyed if everyone pillages it for their own business needs.
Philosophers considered that even before Christ.
https://www.cnbc.com/2011/06/03/the-ancient-and-noble-greek-...
"A fragment of Solon’s poetry describes a situation in which many of the poor “have arrived in foreign lands/sold into slavery, bound in shameful fetters.”"
"In 594 BC, Solon was appointed archon of Athens. His solution to his city’s strife was to cancel both public and private debts and end debt slavery."
> or that the environment will be irrecoverably destroyed if everyone pillages it for their own business needs
https://theconversation.com/the-waters-become-corrupt-the-ai...
Pliny the Elder: "We taint the rivers and the elements of nature, and the air itself, which is the main support of life, we turn into a medium for the destruction of life."
(The same is true for introspection. It's certainly not a modern invention. Andreessen asserts it's an 1800s/1900s invention, but Shakespeare's fucking famous for "to be or not to be, that is the question"!)
You: "it would have never occurred to anyone that humans shouldn’t be slaves"
Come on. Words have meaning.
Thats catagorically wrong on both levels.
Common land was regulated and had a ton of bylaws to make sure that people didn't take the piss. There was lots of work done to improve the soil, (leaving fallow, crop rotation, fertilising, etc etc)
As for anti-slavery, there was a whole multi century effort to fight against surfdom.
The Quakers and other more radical religious types condemned it as unchristian,
The secular types also raged against it, thomas paine is most well known now, but https://en.wikipedia.org/wiki/Thomas_Spence was also a key proponent.