Clever people may learn as much as they wish of the results of science—still one will always notice in their conversation, and especially in their hypotheses, that they lack the scientific spirit; they do not have that instinctive mistrust of the aberrations of thought which through long training are deeply rooted in the soul of every scientific person. They are content to find any hypothesis at all concerning some matter; then they are all fire and flame for it and think that is enough. To have an opinion means for them to fanaticize for it and thenceforth to press it to their hearts as a
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