▁was ▁J . ▁L . ▁A ck r ill . ▁ ▁After ▁comple ting ▁his ▁National ▁Service , ▁he ▁joined ▁the ▁Civil ▁Service ▁and ▁was ▁appointed ▁Ass istant ▁Princi pal ▁in ▁the ▁Col onial ▁Office , ▁ 1 9 5 7 - 8 . ▁He ▁left ▁the ▁Civil ▁Service ▁and ▁was ▁Jane ▁El iza ▁Pro ctor ▁Vis iting ▁Fellow , ▁Pr inc eton ▁University , ▁ 1 9 5 8 - 9 . ▁Return ing ▁to ▁Oxford , ▁he ▁was ▁L ect urer , ▁ 1 9 5 9 , ▁then ▁Fellow ▁and ▁L ect urer , ▁ 1 9 6 0 - 7 , ▁at ▁New ▁College . ▁After ▁that , ▁he ▁was ▁Chair ▁of ▁Philosoph y ▁at ▁Bed ford ▁College , ▁London , ▁ 1 9 6 7 - 8 0 ; ▁Fellow ▁and ▁Pra elect or ▁in ▁Philosoph y ▁at ▁University ▁College , ▁Oxford , ▁ 1 9 8 1 - 9 ; ▁and ▁Professor ▁of ▁Philosoph y ▁at ▁B irk beck ▁College , ▁University ▁of ▁London , ▁ 1 9 8 9 - 9 4 ; ▁and ▁Wy ke ham ▁Professor ▁of ▁Log ic ▁and ▁Fellow ▁of ▁New ▁College , ▁Oxford , ▁ 1 9 9 4 - 2 0 0 0 .. ▁▁ ▁W igg ins ▁was ▁made ▁a ▁Fellow ▁of ▁the ▁British ▁Academy ▁in ▁ 1 9 7 8 . ▁He ▁was ▁also ▁President ▁of ▁the ▁Arist ot elian ▁Society ▁from ▁ 1 9 9 9 ▁to ▁ 2 0 0 0 ▁. ▁He ▁was ▁elected ▁a