Lecture I
I only have to ask a very simple question for you to see that this feeling of certainty derived from the mathematical treatment of certain subjects leads quickly to uncertainty. What would we do with a science like history if in every science there were only so much real knowledge as there is mathematics? How shall we understand and get the facts straight in matters of the human soul if we have to struggle to understand what modern psychology, by the use of mathematics, has developed in order also to secure certainty of understanding? One must come to recognize that in this field it is not possible to introduce mathematics into actual knowledge.
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