Retirement address
· Königsberg, East Prussia (now Kaliningrad, Russia)

Wikimedia Commons · CC BY-SA 3.0 · file Hilbert was present in Königsberg for the 1930 scientific meetings and delivered the retirement-address conclusion associated with “Wir müssen wissen. Wir werden wissen.” The article's note places his presence at the Königsberg meetings in September 1930; the retirement address is dated 8 September 1930, but the quoted sentence itself does not specify the day.