Think and Grow Rich Mastermind Tip for Leaders, Speakers, and Experts from Andrew Carnegie Test #729

Think and Grow Rich Mastermind Tip for Leaders, Speakers, and Experts from Andrew Carnegie Test #729
Napoleon Hill: I had never thought of nature as a teacher of the principle of doing more than is paid for, but I can see a perfect working example of this principle in the illustration you have given. Does nature use the same principle in other ways, Mr. Carnegie?
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