Theories are of no use unless they can be verified by experiment.
Early advocate of scientific method
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"The study of optics is of the greatest utility, for it teaches us to understand the nature of light, and of all things that are visible."
Controversial"The study of astrology is necessary for medicine, and for the understanding of the future."
Controversial"The common way of disputing is not for the discovery of truth, but for victory."
Controversial"Mathematics is the door and the key to the sciences."
Controversial"The true wisdom is not to be found in the books of the Latins, but in the books of the Greeks and Arabs."
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