Hayek had an uncanny psychological insight into the political wiles of human predators. OTH, maybe that's normal for economists.
The Road to Serfdom gives eyes to the oppressed. I'd have to read it again for signs that teach us freedom.
Even among brilliant economists Hayek stands out as another kind of animal altogether. His insights span the breadth of all public policy issues, and I think once we get past this last generation enamored with the utopian ideal of socialism, his writing will begin to be appreciated for what they really are.
He was right when everyone said he was wrong, and ridiculed him (and worse) for it.