In this interview, David Zierler, Oral Historian for AIP, interviews Eric Adelberger, emeritus professor of physics at the University of Washington. He describes his childhood as the son of German immigrants in the interwar period, his early interests in math and science, and a formative summer job at the National Bureau of Standards. Adelberger recounts his decision to attend Caltech for his undergraduate work, and the profound influence of Feynman on his understanding of physics. He explains his decision to remain at Caltech and his evolving interests away from high energy physics toward nuclear astrophysics. Adelberger describes his graduate work on a pulsed-beam neutron time-of-flight system under the direction of Charlie Barnes. Adelberger discusses his postdoctoral work at Stanford, where he did research on a tandem accelerator, and he explains the circumstances leading to his first faculty position at Princeton. He describes his ongoing work on isospin-symmetry breaking, and he recounts the recruitment process that convinced him to join the faculty at UW. Adelberger describes the diverse range of experiments he has pursued over the course of his tenure at UW, and the ongoing relevance of these experiments in theoretical physics. He discusses his work on gravity and general relativity, and he explains some of the philosophical considerations and intramural debates engendered by string theory. At the end of the interview, Adelberger describes what he sees as some of the open questions that have endured over the course of his career.