Virtue (n.) is such that as soon as we ask why one should be virtuous, then we have ceased to be virtuous.
Virtue (n.) , taken to an extreme, becomes a vice.
Virtue (n.) is a mean state between two vices, the one of excess and the other of deficiency.
Virtue (n.) is a state of character concerned with choice, and choice is deliberate desire, therefore both the reasoning must be true and the desire right, if the choice is to be good.
Virtue (n.) is best understood as excellence, will depend on clear judgment, self-control, symmetry of desire, artistry of means; it is not the possession of the simple man, nor the gift of innocent intent, but the achievement of experience in the fully developed man.
Virtue (n.) is always summed up in dealing justly.