That mores is strictly a matter of local custom cannot be denied. But that ethics is pure opinion also...? Maybe there are times for murder, and theft and slavery...Harry Harrison's immortal science fiction tale, the Ethical Engineer!
Deathworld (Book 1&2) : Deathworld Series
Harry Harrison
book
Deathworld : Book 1&2
Harry Harrison
book
The Ethical Engineer : Deathworld 2
Harry Harrison
book
Deathworld (Book 1&2) : Deathworld Series
Harry Harrison
book
Planet of the Damned (SF Classic)
Harry Harrison
book
The Science Fiction Archive #5
Philip K. Dick, James Schmitz, Harry Harrison, Frederik Pohl
book
Deathworld
Harry Harrison
book
Deathworld
Harry Harrison
audiobookbook
The Repairman and Other Stories
Harry Harrison
book
Deathworld
Harry Harrison
audiobookbook
Three
Harry Harrison
book
The Stainless Steel Rat
Harry Harrison
book