I’m trying to find the primary source for this, but I remember one person (who may have been a physicist) left Germany (or another country) on a train. That same train the next day was stopped and thousands of Jews were arrested. He is alleged to have said something to the effect of needing to be one day faster than the rest, but I forgot who it was, and what the quote is.
https://jasoncrawford.org/precognition
(If you don’t want to click through, the answer is Leó Szilárd)
Thanks! That’s actually where I found it in the first place. I thought it might have been Szilárd, but wasn’t able to find the quote.