 Even when moral questions explicitly arise in daily life, just as when we are faced with child-rearing, agricultural, and business questions, sometimes we act impulsively or instinctively rather than pausing to reason, not just about what to do, but about what we ought to do. Jean-Paul Sartre described a case of one of his students who came to him in occupied Paris during World War II, asking advice about whether to stay by his mother, who otherwise would have been left alone, or rather to go join the forces of the Free French, then massing in England (Sartre 1975). In the capacious sense just described, this is probably a moral question; and the young man paused long enough to ask Sartre’s advice. Does that mean that this young man was reasoning about his practical question? Not necessarily. Indeed, Sartre used the case to expound his skepticism about the possibility of addressing such a practical question by reasoning. But what is reasoning?