I heard someone use this to describe star wars Obi Wan Kenobi. I know it must mean the quality of being morally right or justifiable but can you define it more specifically.
Bastion: From French bastillon, diminutive of Old French bastille "fortress, tower, fortified building.
By fortress this means the protector of what is right, traditional or orthodox. It is almost by definition a subjective idea. It is also by definition overwrought, that is, more than is needed to describe the situation.