Virtues:A recognition of a moral principle that describes a causal connection between means and ends in order to pursue values.
Virtues are a means of achieving values. They're based on moral principles, which are causal descriptions that connect a way of acting with a category of values. For instance, rationality is the virtue that connects a consistent and thorough understanding of the world to the achievement of any value by recognizing that only by grasping reality can we effectively pursue it.
Virtues have a secondary importance in Objectivist ethics. Values are the key concept in ethics, and define the moral status of an action or goal. The virtues are tools for pursing those values, but their moral status is defined by how effective they are at accomplishing those goals.
The Objectivist virtues are: rationality, productivity, independence, integrity, honesty, justice, and pride.