It is a rather detailed piece and offers much food for thought and discussion.
Prudence is correct knowledge of things to be done or avoided. Prudence resides in the intellect and is natural, that is, acquired by our own acts but also supernatural, infused with sanctifying grace. As an act of virtue, prudence requires three mental actions: taking counsel carefully with ourself and others, judging correctly from the evidence at hand, and directing the rest of our activity based on the norms we have established.
Prudence is one of the four cardinal virtues; the others are justice, temperance, and fortitude. Prudence is first among the cardinal virtues and guides the others by setting rule and measure, applying moral principles to particular cases.
Prudence is also one of the five intellectual virtues.