Hayek was in many respects a philosophical idealist, in that he believed that ideas rule the world. It was the idea of constructivism, he thought, th… - Alan O. Ebenstein

Hayek emphasized the importance of rules. He thought that what society should do is not to direct the individual in his or her particular actions, but to create a metaphysical structure, as it were, enforced by rules or laws, that create stable expectations and thus allow rational action.

The core ideas in Hayek’s metaphysical and methodological thought were, in the former, that reality is complex; and in the latter, that there should be some empirical corroboration for statements about events in the realm of nature.

Both Hayek and Locke thought that this is best achieved by limiting government’s potential actions and restricting these potential actions to known general rules applicable to all. Both sought a government of rules rather than commands, the latter of which, by their nature, are not known in advance and may be arbitrary—not applicable to all. Hayek’s goal was the society of law.