Roger Bacon — "Theories are of no use unless they can be verified by experiment."
Theories are of no use unless they can be verified by experiment.
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More from Roger Bacon
"The true method of philosophy is by experiment and experience."
"Theories are of no use if they cannot be tested by experiment."
"The present method of studying theology is a disgrace to the Church."
"The study of perspective is a most noble science, and of great utility for all other sciences."
"The study of languages is therefore necessary for all sciences, and especially for theology."