The virtues are interrelated and inseparable, yet each is distinct from the others. Doing the right thing almost always takes courage, just as discipline is impossible without the wisdom to know what is worth choosing. What good is courage if not applied to justice? What good is wisdom if it doesn’t make us more modest? North, south, east, west—the four virtues are a kind of compass (there’s a reason that the four points on a compass are called the “cardinal directions”). They guide us. They show us where we are and what is true.

