49. The Practical Training of Thinking
And I need only remind you of something that should be known here. When the first railroad was to be built, a medical council was asked whether, for hygienic reasons, railroads should be built. The document can be read, and the judgment was passed by the practitioners – it is not that many years ago – that railroads should not be built because, as the practitioners judged, people would destroy their nervous systems. But if you wanted to build railways anyway and people could be found to ride them, then you would have to build high board walls on both sides so that those who pass by the railroad would not get concussions. Another example of such a judgment based on practical experience is when the postmaster Nagler in Potsdam said: “I already send two stagecoaches out every day with no one sitting in them; how is anyone supposed to sit in the train if I send even more every day?”