MixedThe New York Times Book ReviewBy the end of The Idealist, Peters has dropped the pretension of neutrality and taken up Swartz’s crusade. This is fine, I think — it wouldn’t be a good biography if it didn’t have a point of view. But in the final pages, as Peters dons the sports coat of the history lecturer and draws a lame comparison between Aaron Swartz and Noah Webster, he disappoints once again. It’s the whole book in microcosm: superb when it focuses on its subject, unnecessary when it veers away.