▁algebraic ▁geometry , ▁in ▁his ▁later ▁career ▁he ▁has ▁also ▁been ▁a ▁string ▁the or ist . ▁He ▁works ▁on ▁the ▁interfaces ▁and ▁mut ual ▁fert il ization ▁of ▁algebraic ▁geometry ▁and ▁string ▁theory , ▁especially ▁mirror ▁symmetry . ▁ ▁In ▁ 1 9 9 2 – 1 9 9 3 , ▁ 1 9 9 6 – 1 9 9 7 ▁and ▁ 2 0 0 0 ▁he ▁was ▁at ▁the ▁Institute ▁for ▁Advanced ▁Study . ▁In ▁ 1 9 9 5 ▁he ▁was ▁a ▁visit ing ▁professor ▁at ▁Corn ell ▁University , ▁in ▁ 2 0 0 5 ▁at ▁the ▁K av li ▁Institute ▁for ▁The oret ical ▁Physics , ▁and ▁in ▁ 2 0 0 6 ▁a ▁research ▁professor ▁at ▁MS RI . ▁ ▁In ▁ 2 0 1 5 ▁he ▁became ▁a ▁member ▁of ▁the ▁American ▁Academy ▁of ▁Arts ▁and ▁Sciences , ▁in ▁ 2 0 1 3 ▁a ▁Fellow ▁of ▁the ▁American ▁Mathemat ical ▁Society , ▁in ▁ 2 0 0 5 ▁a ▁Senior ▁Sch olar ▁at ▁the ▁Clay ▁Mathemat ics ▁Institute ▁and ▁in ▁ 2 0 0 5 – 2 0 0 6 ▁a ▁G ug gen heim ▁Fellow . ▁ ▁He ▁is ▁a ▁co - editor ▁of ▁selected ▁works ▁of ▁his ▁th esis ▁super visor ▁Phill ip ▁Griff ith s . ▁ ▁Mor r ison ▁was ▁an ▁invited ▁speaker ▁at ▁the ▁International ▁Congress ▁of ▁Mathemat icians ▁in ▁Zürich ▁in ▁ 1 9 9 4 ▁( M ir ror ▁Sym met ry ▁and ▁Mod uli ▁Sp aces