Gregor studies modern and contemporary art from the United States and Germany. He's currently preparing a dissertation proposal about Franz Erhard Walther's fabric objects. He holds a BA in art history from Humboldt Universität zu Berlin and an MA in Modern Art from Columbia University, where he wrote his thesis on frustration and interactivity in Öyvind Fahlström's variable paintings. Gregor has also worked as an art critic for the Frankfurter Allgemeine Sonntagszeitung and as an occasional curator in Berlin and New York. Most recently, he curated "The Eye and the Sky," an exhibition of aerial photography, at the Cantor Arts Center. His writing and criticism have been published in many European publications as well as Artforum, Art Papers, and October.