In this interview, David Zierler, Oral Historian, interviews Paul Grannis, emeritus professor of physics at Stony Brook University. He recounts his childhood in Ohio and describes his early interests and talents in math and science. He explains his decision to attend Cornell University and his reasons to focus on engineering physics while also developing an interest in theory. Grannis describes his graduate work at Berkeley, where he joined the Chamberlain group, which had focused on aligning the proton spin with the magnetic field by transferring the electron polarization to the proton polarization. He reflects on the differing approaches in particle physics as represented by East and West coast institutions. Grannis discusses his research work on the Cyclotron and Bevatron, and he describes his dissertation research on Regge poles and measuring the polarization of lanthanum nitrate crystals. He discusses his postdoctoral research at the Berkeley Radiation Lab, and he explains his decision to join the faculty at Stony Brook, which struck him as an exciting and up-and-coming place to pursue a career. Grannis describes the additional attraction of being in close proximity to Brookhaven Lab, and how he contributed to the overall broadening and improvement of the physics department. He explains his involvement in the ISABELLE project, and he describes the origins of the D0 endeavor and the feeling of excitement at Fermilab during that time. Grannis provides perspective on some of the inherent challenges in the SSC planning project and the existential challenges Fermilab faced as a result of focusing so exclusively on the Tevatron project. He describes the current state of high-energy physics and Europes leadership in this field, and some of the hypothetical advancements that could be made with the ILC endeavor. At the end of the interview, Grannis discusses his current work as co-spokesman of D0, his ongoing planning work on the ILC, he muses about what science projects he would fund if he had discretion on where to deploy 10 billion dollars, and he shares what he sees as some of the most exciting short and long term prospects in the field.