Sources:

https://www.etymonline.com/search?q=p...

https://www.merriam-webster.com/dicti...

Thanks for checking out this video series! I plan to continue this series until One Piece is finished! Going through the arcs and sagas in order to focus on Oda's illustrations of morals and principles shown in his story! We can learn a lot from Oda's writings and depictions, especially those regarding heavy themes, such as those brought up later on in the story.

Below you can find the etymology I sourced in the video, with all of the relevant links located above under Sources. Thank you!!

(n.) Principle, late 14c., "origin, source, beginning" (a sense now obsolete), also "rule of conduct; axiom, basic assumption; elemental aspect of a craft or discipline," from Anglo-French principle, Old French principe "origin, cause, principle," from Latin principium (plural principia) "a beginning, commencement, origin, first part," in plural "foundation, elements," from princeps (genitive principis) "first man, chief leader; ruler, sovereign," noun use of adjective meaning "that takes first," from primus "first" (see prime (adj.)) + root of capere "to take" (from PIE root *kap- "to grasp").