Why not?

You seem to think that is an easy thing to do. However, let us consider the matter as it appears in the opposite classes. For example, when we admire, as we frequently do in many actions, quickness and energy and acuteness of mind or body or even of voice, we express our praise of them by one word, courage.

How so?

We say acute and courageous in the first instance, also quick and courageous, and energetic and courageous; and when we apply this word as a common term applicable to all persons and actions of this class, we praise them.

Yes, we do.

But do we not also praise