3. William S. Burroughs: "The Limits of Control" (1978)
https://aphelis.net/wp-content/uploads/2011/02/BURROUGHS_1978_The_Limits_of_Control.pdf
4. Plato "The Republic" (360 BC)
https://classics.mit.edu/Plato/republic.html
5. Browne, BP, "The Philosophy of Herbert Spencer"
https://archive.org/details/philosophyofherb0000unse/page/n5/mode/2up
6. Conrad, Joseph. "Heart of Darkness"
https://www.gutenberg.org/ebooks/526
A vicious criticism of both colonialism and diversity.