As in Terrans being forceless & no connection to the Force ain't a bad thing-
The Earth philosophy or "code", if it existed as a distinct philosophy in Star Wars, and was the opposite of both the Jedi and Sith codes while not being the Grey Jedi approach, would likely be one of total non-engagement with the Force and its associated moralities, focusing purely on self-reliant, often pragmatic and secular, existence.
This "Earth Code" core tenets would contrast sharply with the other three philosophies: Reject the Force entirely, relying on technology, personal ingenuity, and a secular, agnostic, or pragmatic worldview, viewing Force users as part of "hokey religions" and their conflicts as irrelevant to human existence.
A potential "Earth Code" (based on a highly cynical and non-Force perspective) might state:
"There is no Force; there are only individuals." (Rejects the fundamental energy field that defines all Star Wars philosophies)
"Ideals are a lie; there is only reality." (Rejects both Jedi altruism and Sith grand ambition)
"Through action, I gain survival." (Focuses on practical outcomes over moral or power-based strength)
"Through survival, I gain continuity." (Focuses on continued existence rather than victory or peace)
"Through continuity, my species endures." (Focuses on collective survival rather than individual freedom)
"Humanity shall free itself." (Rejects the Force as a liberator)
This hypothetical "code" emphasizes human agency, survival, and pragmatism, standing in stark contrast to the spiritual and ideological focus of the Jedi, the Sith, and the Grey Jedi. It is important to note, however, that this is a conceptual exercise outside of the established Star Wars narrative.
Yep sad.