"Science makes one colossal assumption always; science assumes that the world is rational in this sense, that when you have thought out thoroughly the implications of your experience, the result is fact.

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That is the basis of all science; it is a colossal assumption, but science cannot move one step without it." Science begins with its demand that the world should be seen as coherent; it insists on looking at it, on investigating it, till it is so seen.