Book 6, Chapters 3-6. Aristotle identifies five
states in which the soul grasps the truth: scientific knowledge, craft knowledge,
prudence, wisdom, and understanding. Both understanding and scientific knowledge are concerned with learnable principles that don’t change. Craft knowledge is a state oriented toward producing something. Prudence is the ability to
“deliberate finely […] about what sorts of things promote living well in general.” Prudence is particularly about human concerns, “things open to deliberation.” These things include both universals and particulars.