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Continue to ChatNo man has a right to expect to succeed in life unless he understands his business, and nobody can understand his business thoroughly unless he learns it by personal application and experience. - P. T. Barnum from https://whatsmyquote.com/quote/no-man-has-a-right-to-expect-to-succeed-in-life-unless-he-understands-his-business-and-nobody-can-understand