The Cardinal Virtues
This week you are studying the Cardinal Virtues, the four qualities the Stoics considered the foundation of every good action: Wisdom (prudence), Courage (fortitude), Justice, and Temperance (self-control). The Latin word "cardinal" comes from "cardo," meaning hinge, the pin a door swings on. Everything else in a good life hangs on these four. The week's theme is Duty and Right Action, so you will see how these virtues are not abstract ideals but the very engine of doing the right thing, moment to moment, in ordinary life.
Passage
You see here, Marcus, my son, the very form and as it were the face of Moral Goodness; "and if," as Plato says, "it could be seen with the physical eye, it would awaken a marvellous love of wisdom." But all that is morally right rises from some one of four sources: it is concerned either (1) with the full perception and intelligent development of the true; or (2) with the conservation of organized society, with rendering to every man his due, and with the faithful discharge of obligations assumed; or (3) with the greatness and strength of a noble and invincible spirit; or (4) with the orderliness and moderation of everything that is said and done, wherein consist temperance and self-control. (15) Although these four are connected and interwoven, still it is in each one considered singly that certain definite kinds of moral duties have their origin: in that category, for instance, which was designated first in our division and in which we place wisdom and prudence, belong the search after truth and its discovery; and this is the peculiar province of that virtue.
— Cicero, On Duties 1.15
Reflection
Cicero introduces Courage as the fourth member of the set, describing it as the greatness and strength of a noble and invincible spirit. He also notes something important: the four virtues are connected and interwoven, yet each one has its own province and its own kinds of duties that flow from it. Wisdom governs the search for truth. Justice governs what we owe others. Courage governs how we hold ourselves when things are hard. Temperance governs the manner of everything we say and do. Together they constitute what Cicero calls Moral Goodness, a quality so beautiful, he says, that if you could see it with your eyes you would fall in love with it. Today is the first day all four virtues appear clearly as a complete set.
Go deeper
If you imagined a person who embodied all four virtues at once, clear-eyed, fair, brave, and self-controlled, what specific feature of that person most differs from how you currently move through your days?
Practice
Four-Corner Portrait
Draw a simple cross on a page, dividing it into four quadrants. Label them: Wisdom (top left), Justice (top right), Courage (bottom left), Temperance (bottom right). In each quadrant, write one sentence describing one specific way you expressed or failed to express that virtue today. Keep it concrete: a moment, a word, a choice. Ten minutes total.