https://www.youtube.com/watch?v=aE0C3fUb8uc
TL;DR — This video introduces ethics by examining the story of Achilles and Hector from Homer's Iliad. It posits that ethics is fundamentally about recognizing and respecting limits in human coexistence, distinguishing between legitimate conflict and excessive cruelty. The concept of ethics evolves over time, as seen in the shift from viewing slavery as a fatality to a crime against humanity.
Takeaway — Ethics is about recognizing and respecting the limits of human coexistence, a concept that has evolved throughout history and requires constant vigilance against cruelty and injustice.