Wisdom or sapience is the ability to think and act using knowledge, experience, understanding, common sense, and insight. Wisdom has been regarded as one of four cardinal virtues; and as a virtue, it is a habit or disposition to perform the action with the highest degree of adequacy under any given circumstance with the limitation of error in any given action. This implies a possession of knowledge, or the seeking of knowledge to apply to the given circumstance. This involves an understanding of people, objects, events, situations, and the willingness as well as the ability to apply perception, judgement, and action in keeping with the understanding of what is the optimal course of action. It often requires control of one's emotional reactions (the "passions") so that the universal principle of reason prevails to determine one's action. In short, wisdom is a disposition to find the truth coupled with an optimum judgement as to what actions should be taken.
The Oxford English Dictionary defines wisdom as "Capacity of judging rightly in matters relating to life and conduct; soundness of judgement in the choice of means and ends; sometimes, less strictly, sound sense, esp. in practical affairs: opp. to folly;" also "Knowledge (esp. of a high or abstruse kind); enlightenment, learning, erudition."Charles Haddon Spurgeon defined wisdom as "the right use of knowledge".Robert I. Sutton and Andrew Hargadon defined the "attitude of wisdom" as "acting with knowledge while doubting what one knows".
The ancient Greeks considered wisdom to be an important virtue, personified as the goddesses Metis and Athena. Athena is said to have sprung from the head of Zeus. She was portrayed as strong, fair, merciful, and chaste. To Socrates and Plato, philosophy was literally the love of Wisdom (philo-sophia). This permeates Plato's dialogues, especially The Republic, in which the leaders of his proposed utopia are to be philosopher kings, rulers who understand the Form of the Good and possess the courage to act accordingly. Aristotle, in his Metaphysics, defined wisdom as the understanding of causes, i.e. knowing why things are a certain way, which is deeper than merely knowing that things are a certain way.