I shall begin with the assumption that a perfect state is one that is rightly ordered, and is therefore wise, brave, temperate and just.

— Plato, from The Republic

From Wikipedia:

The Cardinal virtues are a quartet set of virtues recognized in the writings of Classical Antiquity and, along with the theological virtues, also in Christian tradition. They are comprised of the following qualities:

• • Prudence: also described as wisdom, the ability to judge between actions with regard to appropriate actions at a given time.
  • Justice: also considered as fairness, the most extensive and most important virtue.
  • Restraint: also known as temperance, the practice of self-control, abstention, and moderation tempering the appetition.
  • Courage: also named fortitude, forbearance, strength, endurance, and the ability to confront fear, uncertainty, and intimidation.

References:

https://en.wikipedia.org/wiki/Cardinal_virtues

Images of Four Cardinal Virtues

Also see:

https://equivalentexchange.wordpress.com/2015/01/25/off-to-see-the-wizard/

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