If your only goal is to become rich, you will never achieve it.

The line frames wealth as an outcome rather than a sustainable primary aim. Read this way, Rockefeller is warning that single-minded pursuit of money can distort judgment—encouraging short-termism, unethical choices, or burnout—and can also leave a person psychologically unsatisfied even if they do accumulate riches. The quote implies that durable success tends to come from pursuing a larger purpose (building something useful, serving customers, mastering a craft, or contributing to society), with financial reward following as a byproduct. It also gestures toward a moral critique: making “becoming rich” the sole end empties achievement of meaning, so the goal is never truly “achieved.”