“It is absurd to assume that upon the rigid earth-crust the organic originated from the inorganic. In order to explain the nascence of the lowest organisms on the earth-crust, one must assume an already existing organising principle or a thought-process, under conditions that would render organic combinations impossible. We must accordingly assume that these conditions are valid only for the life-process in the actual state of the earth's surface, and only so far as we can explain them may we estimate the possibility of life-processes under other conditions.”
Gesammelte Mathematische Werke (1876)
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Bernhard Riemann43
German mathematician 1826–1866Related quotes
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Context: It has always been fatal when somebody finds out too much too suddenly. If John Huss had cackled more like a hen, he might have survived Michaelmas, and been esteemed for his eggs. The last fifty years have laid the axe of analysis to the root of every axiom; they are triflers who content themselves with lopping the blossoming twigs of our beliefs, or the boughs of our intellectual instruments. We can no longer assert any single proposition, unless we guard ourselves by enumerating countless conditions which must be assumed.