“The great theme of his remarkable explorations in intellectual history is the danger of all constructivism, the belief that we can deliberately design social arrangements which will be better than those we unwittingly hit upon. Paradoxically, however, the drive of Hayek's own work is itself characteristically that of a rationalist construction. Admiring David Hume and detesting Auguste Comte, his genius was to marry the sceptical insights of the one to more than a touch of the compulsive rigour of the other.”