Foxes pursue many ends at the same time and see the world in all its complexity. They are “scattered or diffused, moving on many levels,” says Berlin, never integrating their thinking into one overall concept or unifying vision. Hedgehogs, on the other hand, simplify a complex world into a single organizing idea, a basic principle or concept that unifies and guides everything. It doesn’t matter how complex the world, a hedgehog reduces all challenges and dilemmas to simple— indeed almost simplistic—hedgehog ideas. For a hedgehog, anything that does not somehow relate to the hedgehog idea holds
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