Charles Darwin
It is a fatal fault to reason whilst observing, though so necessary beforehand and so useful afterwards.
Charles Darwin
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It is a fatal fault to reason whilst observing, though so necessary beforehand and so useful afterwards. - Charles Darwin quote

It is a fatal fault to reason whilst observing, though so necessary beforehand and so useful afterwards.

Charles Darwin

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2017 November 03
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https://books.google.com/books?id=ZusTCgAAQBAJ&pg=PA171&dq=It+is+a+fatal+fault+to+reason+whilst+observing,+though+so+necessary+beforehand+and+so+useful+afterwards.+Charles+Darwin&hl=en&sa=X&ved=0ahUKEwjk1qTGkrLWAhWCWLwKHQzxAkgQ6AEIKjAA#v=onepage&q=It%20is%20a%20fatal%20fault%20to%20reason%20whilst%20observing%2C%20though%20so%20necessary%20beforehand%20and%20so%20useful%20afterwards.%20Charles%20Darwin&f=false

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Charles Darwin

Charles Darwin

British naturalist, author of "On the origin of species, by means of natural selection"

February 12th, 1809 - April 19th, 1882