Roger Bacon — "The study of alchemy is not only useful, but necessary, for the perfection of al…"
The study of alchemy is not only useful, but necessary, for the perfection of all other sciences.
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More from Roger Bacon
"The four greatest stumbling blocks to understanding are: authority, long-standing custom, the sense of the ignorant crowd, and the hiding of one's own ignorance under the show of wisdom."
"There are four chief obstacles to grasping truth: authority, habit, popular opinion, and the concealment of ignorance."
"The errors of the Latins are innumerable, and they are worse than the errors of the infidels."
"The true wisdom is not to be found in the books of the Latins, but in the books of the Greeks and Arabs."
"There are four chief obstacles to grasping truth: frail authority, custom, the opinion of the unlearned crowd, and the concealment of ignorance by ostentation."