▁( 1 6 0 1 ): ▁" The ▁sign ▁of ▁a ▁natural ▁law ▁must ▁be ▁the ▁universal ▁respect ▁in ▁which ▁it ▁is ▁held , ▁for ▁if ▁there ▁was ▁anything ▁that ▁nature ▁had ▁truly ▁commanded ▁us ▁to ▁do , ▁we ▁would ▁und ou bt edly ▁obey ▁it ▁univers ally : ▁not ▁only ▁would ▁every ▁nation ▁respect ▁it , ▁but ▁every ▁individual . ▁Instead ▁there ▁is ▁nothing ▁in ▁the ▁world ▁that ▁is ▁not ▁subject ▁to ▁contradiction ▁and ▁dispute , ▁nothing ▁that ▁is ▁not ▁rejected , ▁not ▁just ▁by ▁one ▁nation , ▁but ▁by ▁many ; ▁equally , ▁there ▁is ▁nothing ▁that ▁is ▁strange ▁and ▁( in ▁the ▁opinion ▁of ▁many ) ▁un natural ▁that ▁is ▁not ▁approved ▁in ▁many ▁countries , ▁and ▁author ized ▁by ▁their ▁custom s ." ▁ ▁Contempor ary ▁juris pr ud ence ▁One ▁modern ▁art ic ulation ▁of ▁the ▁concept ▁of ▁natural ▁laws ▁was ▁given ▁by ▁Bel ina ▁and ▁D z ud zek : ▁" By ▁constant ▁repet ition , ▁those ▁practices ▁develop ▁into ▁structures ▁in ▁the ▁form ▁of ▁disc ourses ▁which ▁can ▁become ▁so ▁natural ▁that ▁we ▁abstract ▁from ▁their ▁soci etal ▁orig ins , ▁that ▁the ▁latter ▁are ▁forgotten ▁and ▁seem ▁to ▁be ▁natural ▁laws ." ▁ ▁In ▁juris pr ud ence , ▁natural ▁law ▁can ▁refer ▁to ▁the ▁several ▁do ctr ines : ▁ ▁That ▁just ▁laws ▁are ▁im man ent ▁in ▁nature ; ▁that ▁is , ▁they ▁can ▁be ▁" dis cover ed " ▁or ▁" found " ▁but ▁not ▁" created " ▁by ▁such ▁things ▁as