A useful description of the importance of prudence or wisdom (sophia) rather than theory or formal education in statesmanship:
Following a discussion of virtue as a mean between extremes, Aristotle attributes to concrete action a higher degree of truth than to general principles of ethics.
The mark “of a man with high moral standards is his ability to see the truth in each particular moral question, since he is … the standard and measure for such questions.” (20) Ethics in politics, then, is not merely announcing moral postulates or retreating before the complexities of the world.
What matters, said Voegelin, are
not correct principles about what is right by nature in an immutable generality, nor the acute consciousness of the tension between the immutable truth and its mutable application (possibly even with tragic overtones), but the changeability, the kineton itself, and the methods to lift it to the reality of truth. The truth of existence is attained when it becomes concrete, i.e., in action. (21)
In classical and Christian ethics, the first of the moral virtues is sophia or prudentia because without adequate understanding of the structure of reality, including the conditio humana, moral action with rational coordination of means and ends is impossible. (22)
Voegelin’s characterization of the spoudaios (who sees the “truth in concrete things”) carries an important moral message for the democratic statesman. No amount of single tangible facts imparted through education can substitute for the type of experience that pushes great men to the limits of their human possibilities. The knowledge of the statesman grows out of the eternal laws by which man moves in the social world. The validity of those laws, the Aristotelian truth that man is a political animal, does not derive from “objective” facts in conformity with the mathematizing models of the natural sciences. The key to those laws of man lies in the practical wisdom through which the statesman elevates his experiences into universal laws of human nature. (23)”
— “Eric Voegelin and Reinhold Niebuhr on the Moral Resources of Democracy,” Greg Russell in Modern Age, Sep 22, 2006