All real and positive properties found in moving bodies by virtue of which we say they move are also found in contiguous bodies even when those contiguous bodies are considered to be at rest (Pr II 30).
Physical objects or things that are in motion or changing position in space.
Pr II 30(indicates the source or support for this statement)
A reference code meaning 'Proposition 2, item 30'—this points to a specific numbered claim made earlier in a philosophical work, like a citation to another part of a book.
Real and positive properties(describing what belongs to moving bodies)
Actual, genuine qualities or characteristics that truly exist and make something what it is, rather than just being imaginary or negative (like describing something by what it's NOT).
Nevertheless, Descartes’ hypothesis of motion may sanction a species of relative motion, since his phrase, “considered at rest”, implies that the choice of which bodies are at rest or in motion is purely arbitrary. According to the “relational” theory (or at least the more strict versions of relationism), space, time, and motion are just relations among bodies, and not separately existing entities or properties that are in any way independent of material bodies. Motion only exists as a “relative