For [Louis] Brandeis, you know, ethnicity and background are much less important than facts and reason. And he believes that far from wanting to efface our diversity of perspectives, we have to embrace it because that makes us more American, not less. In that sense, he's incredibly modern in an age of cultural pluralism. And it is disappointing for just the reasons you say that not everyone has embraced his pluralistic vision.

It can sound trite if you just say citizens need to be educated for democracy to work, but for him it wasn't trite. It was really this strenuous challenge to citizens to use their moments of leisure, which he defined as time away from work, to collect the facts that were necessary for full democratic participation.

Louis Brandeis actually changes his mind about women's suffrage because he works with these brilliant women in the women's suffrage movement like Josephine Goldmark, his sister-in-law, where he writes a Brandeis brief which convinced the court to uphold maximum hour laws for women by collecting all these facts and empirical evidence.

I think he's [Louis Brandeis] a great model for progressive justices today who want to answer the originalists. It's not that the original paradigm cases are irrelevant, but you have to focus on the values the framers were trying to protect, not on the means with which those values were invaded in the 18th century.

Before Sept. 11, the idea that Americans would voluntarily agree to live their lives under the gaze of a network of biometric surveillance cameras, peering at them in government buildings, shopping malls, subways and stadiums, would have seemed unthinkable, a dystopian fantasy of a society that had surrendered privacy and anonymity.

[Louis] Brandeis, like [Tomas] Jefferson, is an equal opportunity critic of bigness. And he, like Jefferson, sees American history as this incredible clash between small producers, farmers, and small business people on the one hand, and wicked oligarchs and financiers and monopolists on the other.

Privacy is not for the passive.