The fruit of the Enlightenment has been the growth and centralization of the state, at the expense of all other institutions. The material plenty we enjoy today are in spite of this change, not because of it.
There is a persistent myth that capitalism has destroyed what would have been a natural abundance and peace of mind. Yet nature does not generate abundance or peace. The characteristic mark of the "state of nature" is irreconcilable conflict.
The marginalist revolution posed a fundamental problem for economic theory. Mises’s approach not only solved the problem of economizing resources in a division of labor, but provides a robust framework for economic research.