(p. 227) The fact that some people are led into a practice in pursuit of goals that are external to the practice– money, fame, or what have you– need pose no threat to the integrity of the practice itself. So long as those goals do not penetrate the practice at all levels, those in pursuit of external goals will eventually drop out or be left behind or change their goals or be discredited by those in pursuit of a practice’s proper goals. However, if external goals do penetrate the practice at all levels, it becomes vulnerable to corruption. Practices are always developing and changing, and the direction that development takes will be determined by participants in the practice. Good practices encourage wise practitioners who in turn will care for the future of the practice.
Schwartz, Barry, and Kenneth Sharpe. Practical Wisdom: The Right Way to Do the Right Thing. New York: Riverhead Books, 2010.
A somewhat similar point is made in:
Diamond, Arthur M., Jr. “How Institutional Incentives and Constraints Affect the Progress of Science.” Prometheus 26, no. 3 (Sept. 2008): 231-239.