What the mind of man can conceive and believe, it can achieve.
Light bulb, phonograph, inventor
Often attributed, though sometimes also to Napoleon Hill.
Early 20th Century
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"It is not because things are difficult that we do not dare; it is because we do not dare that they are difficult."
Controversial"I am not discouraged, because every wrong attempt discarded is another step forward."
Controversial"I never had a policy; I have just tried to do my very best each and every day."
Humorous"Hell, there are no rules here—we're trying to accomplish something."
Strange & Unusual"I am more of a sponge than a scientist."
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