After ten years with the Theoretical Physics Department at Bell Laboratories, Professor Lee left and joined the MIT Department of Physics in 1982. He is a true pioneer in "mesoscopic physics," (the study of small devices at low temperatures). He has also made important contributions to the theory of disordered electronic systems. He introduced the concept of universal conductance fluctuations to describe these small devices at low temperatures. Because of this, he was awarded the 2005 Dirac Medal of the International Centre for Theoretical Physics as well as the Oliver Buckley Prize of the American Physical Society. He is currently researching and focusing on high temperature superconductors.