When the strength of a principle is expended in meaningless battles over minutiae the principle is weakened greatly. More importantly, there is no such thing a

When the strength of a principle is expended in meaningless battles over minutiae the principle is weakened greatly. More importantly, there is no such thing as a perfectly self-consistent set of ethical or moral rules. There will always be gray areas and areas of extreme complexity. It's far more valuable to know when to make exceptions and how to uphold the spirit of a principle independent of absurdly rigid rules.