▁( 1 8 7 7 – 1 9 4 0 ). ▁ ▁Mod er ate ▁object iv ism ▁ad her es ▁to ▁basic ▁not ions ▁of ▁the ▁Natural ▁Law ▁Theory . ▁ ▁W . ▁D . ▁Ross ▁refers ▁to ▁these ▁moder ate ▁object iv ists ' ▁accounts ▁of ▁moral ▁principles ▁as ▁“ pr ima ▁fac ie ▁principles ” ▁which ▁are ▁valid ▁rules ▁of ▁action ▁that ▁one ▁should ▁generally ▁ad here ▁to ▁but , ▁in ▁cases ▁of ▁moral ▁conflict , ▁may ▁be ▁overrid able ▁by ▁another ▁moral ▁principle , ▁hence ▁the ▁moder ation . ▁ ▁Over view ▁Prima ▁fac ie ▁principles ▁contain ▁duties ▁that ▁are ▁correl ated ▁with ▁many ▁eth ical ▁theories . ▁ ▁Such ▁duties ▁include ▁f idel ity , ▁ful fill ing ▁commit ments , ▁truth ▁and ▁promises ; ▁justice , ▁giving ▁people ▁what ▁they ▁des erve ; ▁ ▁respect ▁for ▁freedom ; ▁benef ic ence , ▁impro ving ▁the ▁conditions ▁of ▁others ; ▁non - in j ury ; ▁self - im prov ement , ▁stem ming ▁from ▁the ▁possibility ▁of ▁impro ving ▁one ’ s ▁own ▁condition ▁with ▁respect ▁to ▁virtue , ▁intelligence , ▁and ▁happiness ; ▁non - par as it ism , ▁and ▁most ▁important ly ▁re par ation , ▁the ▁duty ▁of ▁making ▁up ▁for ▁wrong ful ▁acts ▁previously ▁done ▁to ▁others . ▁ ▁Ross ▁believed ▁that ▁these ▁duties ▁are ▁to ▁be ▁followed ▁and ▁remain ▁with ▁each ▁person ' s ▁thought ▁processes ▁of ▁behavior ▁because ▁it ▁is ▁their ▁moral ▁oblig ation ▁to ▁do ▁so . ▁ ▁Also