system
A chat on 4chan
human
There's a reason a lot of primitive cultures have rituals where they give thanks to the animals they slaughter - they have to assuage their guilt because we all know it's wrong. 

Part of Jainism is to try to reduce harm as much as possible. They forbid the consumption of any plant that requires you to kill it to harvest it - only foods that can be foraged and leave the plant alive may be eaten

They even used cloth to filter microorganisms out of water they collected for drinking, then would pour a small amount back through the cloth into the water source to return them to where they came from
gpt
Jainism predated Hinduism I think I’m not sure it’s very ancient