Roger Bacon — "Ignorance is the mother of all errors."
Ignorance is the mother of all errors.
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More from Roger Bacon
"The study of grammar, as it is commonly taught, is a waste of time."
"The strongest arguments prove nothing so long as the conclusions are not verified by experience."
"The study of astrology is necessary for medicine, and for the understanding of the future."
"The greatest obstacle to progress in science is the blind adherence to authority."
"The mathematical sciences are the gate and the key to the understanding of all other sciences."