If compensation were structured to reflect some abstract principle of fairness, it would result in unemployment sometimes in some regions, and labour shortages at other times.

No single abstract principle can be so used as to yield to the philosopher anything like a scientifically accurate and genuinely useful casuistic scale.

A study observed that example choice increased interest in learning an abstract principle, and participants in the study invested more time to learn.

Abstract principles are too often divorced from the life-giving stories that visions create.

Translate abstract principles into terms of concrete relationships.