For without experiment nothing can be sufficiently known. Therefore, he who wishes to be certain of the truths of things must have recourse to experiment.
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"It is necessary to know the causes of things, and not only their effects, if we wish to have perfect knowledge."
"The world is full of errors, and men are in darkness, and they do not know it."
"The greatest obstacle to progress in science is the blind adherence to authority."
"The study of logic is necessary, but it is not sufficient for the acquisition of knowledge."
"Experimental science is the mistress of all speculative sciences."
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