He began his career at Argonne in 1969 during the early years of the High Energy Physics Division and the infancy of the Standard Model of particle physics. Recruiting actively, he built up an active small group of young theorists concentrating initially on strong interactions. Later, leveraging Argonne LDRD resources, he fostered a broadening of the Division’s theory effort to include electro-weak symmetry breaking and physics beyond the standard model. In 2009 and 2010, as a member of a Laboratory-wide Senior Computational Scientist Search Committee, he recognized the opportunity for a major enhancement of the computational science efforts in the Division and Laboratory. He identified and recruited distinguished senior candidates, resulting in the establishment of the Cosmological Physics and Advanced Computing group.