"Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude."
"Reason and free inquiry are the only effectual agents against error... They are the natural enemies of error, and of error only... If [free enquiry] be restrained now, the present corruptions will be protected, and new ones encouraged."
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Source: Thomas Jefferson, Joyce Appleby, Terence Ball (1999). “Jefferson: Political Writings”, p.259, Cambridge University Press
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