“I note that a common but faulty view is that, like a satellite navigator, conscience gives us directions from outside our own moral reasoning. The classical Christian conception of conscience is of the natural perception of basic moral principles, their application in particular circumstances, and the final judgment about what is to be (or has been) done. Without shared objective principles, "conscientious" belief becomes window-dressing for the raw expression of preference or power. But conscience must be both well-informed and well-formed if it is to be a reliable guide to action.”