They aren't always carried out in public, but they necessarily involve interacting with other people. Virtuous actions replenish self-esteem because they're done to build the best life possible. Acting out a Virtue is personally rewarding (even if it isn't praised or rewarded by others) because it affirms your sense of who you should be in your community. Virtuous behavior is encouraged socially and in turn reinforces social ties to others who hold the same value system. A Virtue is a trait or quality that represents the best a person can be, according to the culture they live in.
