One of the four Aristotelian moral virtues. And Justice is another.
Used to be that Virtues were taught to children to teach them proper human behavior and mentality. Something to live up to, a model for their own lives. Historical figures who embodied certain virtues lives were taught as examples.
Now virtue is scorned and trashed.
The end of what we call “civilization” is happening as we write, and real civilization based on Virtue, Truth and Morality must be born again. All the truths are there.