Books:
The Setting Sun by Dazai Osamu, Translated by Donald Keene, Digital Copy from Internet Archive.
Rashōumon and 17 Other Stories by Ryūnosuke Akutagawa , Translated by Jay Rubin, Digital Copy from Internet Archive.
Kokoro by Natsume Soeseki, Translated by Ineko Sato, Digital Copy from Internet Archive.
Thousand Cranes by Yasunari Kawabata, Translated by Edawrd G. Seidensticker, Digital Copy from Internet Archive.
Internet Sources and Journals:
https://archive.org/details/settingsun0000daza/mode/2up
https://www.gotquestions.org/wise-serpents-harmless-doves.html
https://archive.org/details/settingsun0000daza/page/128/mode/2up?q=jesus
https://www.britannica.com/topic/Pieta-iconography
https://en.wikipedia.org/wiki/D._H._Lawrence
https://en.wikipedia.org/wiki/Friedrich_Nietzsche
https://en.wikipedia.org/wiki/Anton_Chekhov
https://en.wikipedia.org/wiki/The_Cherry_Orchard
https://www.sparknotes.com/drama/cherryorchard/character/yermolay-lopakhin/
https://en.wikipedia.org/wiki/The_Seagull
https://en.wikipedia.org/wiki/Ogata_K%C5%8Drin
https://www.yourdictionary.com/mal-du-siecle
https://en.wikipedia.org/wiki/The_Tale_of_Genji
http://www.susanspann.com/the-symbolism-of-japanese-hydrangea/
https://theacheron.medium.com/rosa-luxemburg-introduction-to-political-economy-e8c7ce80104
https://en.wikipedia.org/wiki/Alfred_de_Musset
https://en.wikipedia.org/wiki/Sarashina_Nikki
https://en.wikipedia.org/wiki/Lord_Byron
https://en.wikipedia.org/wiki/Sh%C5%8Dwa_era
https://en.wikipedia.org/wiki/Maurice_Utrillo
https://en.wikipedia.org/wiki/Talk:Faust
https://www.britannica.com/biography/Johann-Wolfgang-von-Goethe
https://www.sunbirds.com/texts/themes/1228
https://en.wikipedia.org/wiki/I-novel
https://castle.eiu.edu/studiesonasia/documents/seriesIV/Michael_Wright.pdf
http://www-formal.stanford.edu/jmc/progress/marxism2.html
https://en.wikipedia.org/wiki/Ethacridine_lactate
https://www.hsph.harvard.edu/wp-content/uploads/sites/114/2012/10/rp217.pdf
https://www.atsjournals.org/doi/abs/10.1164/art.1952.66.6.765?journalCode=art
https://en.wikipedia.org/wiki/Rosa_Luxemburg
https://en.wikipedia.org/wiki/Marie_Laurencin
https://en.wikipedia.org/wiki/Kazoku
https://en.wikipedia.org/wiki/Timeline_of_Japanese_history
https://en.wikipedia.org/wiki/Proletarian_literature
https://www.investopedia.com/terms/m/marxism.asp
https://en.wikipedia.org/wiki/Victor_Hugo
https://en.wikipedia.org/wiki/Alexandre_Dumas
http://bungeikan.jp/international/detail/39/
https://www.nippon.com/en/japan-data/h00597/a-timeline-of-christianity-in-japan.html
https://www.britannica.com/topic/social-contract/The-social-contract-in-Rousseau
https://www.studiobinder.com/blog/naturalism-vs-realism-art/
https://en.wikipedia.org/wiki/Bible_translations_into_Japanese
https://en.wikipedia.org/wiki/Religion_in_Japan
https://en.wikipedia.org/wiki/Postwar_Japan
https://dictionary.cambridge.org/dictionary/english/revolution
https://www.liberation.fr/livres/2008/01/17/nippon-parano_62812/
https://en.wikipedia.org/wiki/Meiji_oligarchy
https://en.wikipedia.org/wiki/Government_of_Meiji_Japan
https://en.wikipedia.org/wiki/The_Setting_Sun#cite_ref-Michigan_2-0
https://en.wikipedia.org/wiki/Osamu_Dazai