The matter that surfaces in the relationship between trust, society and wellbeing impinges on its stability and sustainability resulting in a two-way recursive causality: Society benefits from the moral trust of its citizens. Citizens earn the trust of society in its provision of desired goods, services, and trustworthy relations. An example of such trust as cohesive relationship between society, businesses small and large, and customers, is of a phenomenological nature invoking moral consciousness. The individual, business, and the social collective now come together through an evolutionary learning process of social interaction, integration and endogenously regenerated evolutionary equilibriums. An endogenous theory of ethics is thereby formulated out of the phenomenology of moral consciousness. This paper formalizes a methodological theory of endogenous ethics based on the premise of unity of knowledge as the phenomenological episteme. It shows how such an ethical methodology can be applied in society at large with customer and business relations as an example.