Great spirits have always encountered violent opposition from mediocre minds.
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Mary Shelley
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Albert Einstein
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Richard Hooker
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Robert Frost
B
Correct answer
Explanation
Albert Einstein is correctly attributed as the author of this quote about opposition to great ideas. Einstein (1879-1955) faced significant opposition to his revolutionary theories in physics. Mary Shelley, Richard Hooker, and Robert Frost are not the source of this particular quote. Einstein famously encountered resistance to his theories before they were widely accepted.