▁Foreign ▁Honor ary ▁Member ▁of ▁the ▁American ▁Academy ▁of ▁Arts ▁and ▁Sciences ▁in ▁ 1 9 9 2 . ▁ ▁Philosoph ical ▁work ▁▁ ▁W igg ins ▁is ▁well ▁known ▁for ▁his ▁work ▁in ▁met aph ys ics , ▁particularly ▁identity . ▁In ▁his ▁Sam eness ▁and ▁Sub st ance ▁( O x ford , ▁ 1 9 8 0 ), ▁he ▁proposed ▁concept ual ist ▁real ism , ▁a ▁position ▁according ▁to ▁which ▁our ▁concept ual ▁framework ▁maps ▁reality . ▁ ▁According ▁to ▁phil os opher ▁Harold ▁No on an : ▁ ▁The ▁most ▁influ ential ▁part ▁of ▁W igg ins ' s ▁work ▁has ▁been ▁in ▁met aph ys ics , ▁where ▁he ▁has ▁developed ▁a ▁fund ament ally ▁Arist ot elian ▁conception ▁of ▁subst ance , ▁en rich ed ▁by ▁ins ights ▁drawn ▁from ▁Put nam ▁( 1 9 7 5 ) ▁and ▁K rip ke ▁( 1 9 8 0 ). ▁His ▁works ▁also ▁contain ▁influ ential ▁discuss ions ▁of ▁the ▁problem ▁of ▁personal ▁identity , ▁which ▁W igg ins ▁el uc id ates ▁via ▁a ▁conception ▁that ▁he ▁calls ▁the ▁" An imal ▁Attribute ▁View ." ▁ ▁He ▁has ▁also ▁made ▁an ▁influ ential ▁contribution ▁to ▁eth ics . ▁His ▁ 2 0 0 6 ▁book , ▁Eth ics . ▁ ▁Tw elve ▁L ect ures ▁on ▁the ▁Philosoph y ▁of ▁Mor ality ▁def ends ▁a ▁position ▁he ▁calls ▁" m oral ▁object iv ism ". ▁ ▁He ▁has ▁written ▁widely ▁on ▁other ▁areas ▁including ▁philosophy ▁of ▁language