As health produces health, so does philosophic wisdom produce happiness. Wisdom is a part of virtue that once possessed makes a man happy. A man of practical wisdom has both knowledge and ability to act; the incontinent man has knowledge but lacks the ability to act. Understanding is neither about things that are unchangeable nor about things changeable; it is about the objects of practical wisdom. Practical wisdom issues commands, its object is to do the right thing; understanding decides. Excellence of deliberation is not opinion. The man who deliberates badly makes mistakes while he who deliberates well does so correctly; correctness in deliberation is the truth that determines opinion. … Continue reading Aristotle