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John D. Rockefeller
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Singleness of purpose is one of the chief essentials for success in life, no matter what may be one's aim.
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John D. Rockefeller
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Copyright © 1997-2001 Quoteland.com, Inc., all rights reserved unless otherwise noted.
Books about Concentration
Click this icon to engrave the quote on mugs, bookmarks, t-shirts and much more