Concentration is the key to economic results. No other principles of effectiveness is violated as constantly today as the basic principle of concentration. – Peter Drucker
Quote by Peter Drucker

Other quotes by Peter Drucker
The only thing we know about the future is that it will be different. – Peter Drucker
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People who dont take risks generally make about two big mistakes a year. People who do take risks generally make about two big mistakes a year. – Peter Drucker
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