Gevalt – you quoted the last part of the halacha of the rambam and are…again….missing the first part of the same halacha regarding ger toshav, which the rambam says “yereah li” “it appears to me” that one must dl gemilus chasadim and derech eretz LIKE A JEW, making a clear distinction between jew and akum., Then he turns to akum and says “afilu” akum, meaning don’t think that since im saying to treat a ger toshav like a yid that a goy whos oved avoda zara you should treat like garbage, since tzkvu chachamim, the chachamim commanded us to feed their poor, etc (omitting.hashovas aveidah and other mitzvos), because of darchei sholom. “Harei neemar” with this the rambam brings 2 pesukim for 2 different ideas, the 2nd pasuk of vechol nesivoseah sholom means that the way we behave should lead to sholom, and the first pasuk is anyone’s guess, but if we are to say like you that it’s advocating altruism “lishma”, we wouldn’t need the two pesukim, would we? That would be enough of a reason without nesivoseah sholom…rather i think the two pesukim refer to the two people discussed in this halacha, the first pasuk of rachamav al kol maasav refers to the ger toshav and the 2nd, referring to making peace, refers to the akum
Have you ever “learned up” a rambam before?