Roger Bacon — "There are four chief obstacles to grasping truth: authority, habit, popular opin…"
There are four chief obstacles to grasping truth: authority, habit, popular opinion, and the concealment of ignorance.
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More from Roger Bacon
"The philosophers of the Arabs are more accurate and more subtle than the Latins."
"The world is full of errors, and men are in darkness, and they do not know it."
"All science requires mathematics."
"It is a great shame that Christians neglect the study of languages, which is so necessary for the understanding of the divine law."
"Ignorance is the mother of all errors."
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