This is natural, like a heavy body falling to its natural place, or a wanderer returning home. Asserting their importance and universality implicitly teaches that they are salvational, that you get to heaven by practicing them. They constitute only one subjective preference among many, like a taste in foods rather than like the principles of anatomy. They rest on an outdated, simplistic psychology. Wisdom is only a subjective habit of mind rather than an insight into objectively existing things.
Courage is a specialty for soldiers rather than a necessary aspect of every virtue.
Moderation is cowardly rather than passionate. Moderation is dull. Justice is a mathematical, impersonal, calculating thing rather than something intuitive like musical harmony. Justice is only external and social. Justice is necessary but unattractive, like a medicine or a law.