Even after Minkowski left the University of Königsberg and went to Bonn, he still returned to Königsberg for every vacation and joined Hurwitz and Hilbert in their almost daily walks:
Kahit na matapos Minkowski kaliwa ang University of Königsberg at nagpunta sa Bonn, siya pa rin bumalik sa Königsberg para sa bawat bakasyon at sumali sa Hurwitz at Hilbert sa kanilang halos araw-araw na mga kalagayan: