Victor Davis Hanson's article on A Postmodern President elicited dozens of thoughtful and insightful responses. Here are my own thoughts:
When the referents for language become obscured or washed away in the public discourse, and people start believing that language is but a means to an end and cannot adequately describe reality (leading to demoralization, cynicism, action fetishes, and the “will to power” of collectivist movements), language is reality (leading often to utopianism, triumphalism, and the rise of the demagogue), then the civilization begins to cannibalize itself.
Civilizations are built on communication and organization, the intergenerational transmission of knowledge and history, and the allocation of resources, determined by law and justice, in order to nourish and sustain life.
When the language is decayed, communications and organization suffer, and the links of history, knowledge, tradition, and philosophy become severed.
This leads to an existential crisis in the youth generation, which may narcissisticly view itself as the culmination of all history (instead of an integral part of the story of humanity), resulting in hubris, the disregard of the limits of material reality (resource scarcity, e.g.), and human nature.
In other words, entropy in the language feeds a false sense of “freedom,” freedom from all constraints, including those of rationality, morality, and reality.