“The unique key to wealth is nothing more, nothing less, only self-discipline that will help you gain full and total control of your own mind.” Napoleon Hill

“…Şunu asla unutmayın ki, tam denetimine sahip olduğunuz tek ve biricik şey kendi akli tutumunuzdur ve en köklü ve derin önemdeki tek konu da budur.” Napoleon Hill

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