America's Founders understood human nature and the human tendency to betray trust, to abuse delegated power, and need for a written Constitution to protect "We, the People" from such flaws in human nature.
Although the recent false idea that persons in positions of power can "compartmentalize" their tendencies in such a way that disloyalty and lack of fidelity to friends and family do not signify the same tendencies in matters of public trust, wise persons throughout the ages have known better.
That is a very apt quote.
By now Weiner must have lost all feeling in his private connections.