What is the Virtue of a Horse?

What then is the virtue of a horse? Is it to have a bridle studded with gold and girths to match, and a band of silken threads to fasten the housing, and clothes wrought in various colors and gold tissue, and head gear studded with jewels, and locks of hair plaited with gold cord? Or is it to be swift and strong in its legs, and even in its paces, and to have hoofs suitable to a well bred horse, and courage fitted for long journeys and warfare, and to be able to behave with calmness in the battle field, and if a rout takes place to save its rider? Is it not manifest that these are the things which constitute the virtue of the horse, not the others? 

Again, what should you say was the virtue of asses and mules? Is it not the power of carrying burdens with contentment, and accomplishing journeys with ease, and having hoofs like rock? Shall we say that their outside trappings contribute anything to their own proper virtue? By no means. 

And what kind of vine shall we admire? One which abounds in leaves and branches, or one which is laden with fruit? Or what kind of virtue do we predicate of an olive? Is it to have large boughs, and great luxuriance of leaves, or to exhibit an abundance of its proper fruit dispersed over all parts of the tree? 

Well, let us act in the same way in the case of human beings also: let us determine what is the virtue of man, and let us regard that alone as an injury, which is destructive to it. What then is the virtue of man? Not riches that you should fear poverty: nor health of body that you should dread sickness, nor the opinion of the public, that you should view an evil reputation with alarm, nor life simply for its own sake, that death should be terrible to you: nor liberty that you should avoid servitude: but carefulness in holding true doctrine, and rectitude in life. Of these things not even the devil himself will be able to rob a man, if he who possesses them guards them with the needful carefulness.