He founded the Illinois Mathematics and Science Academy, in Aurora, Illinois in 1986, and was Resident Scholar Emeritus there from 2012 until his death in 2018.
Ia mendirikan Akademi Sains dan Matematika Illinois, di Aurora, Illinois pada 1986, dan menjadi Residen Scholar Emeritus di sana dari tahun 2012 hingga kematiannya pada 2018.