Louis Brandeis really inspired me to write this book [Louis D. Brandeis: American Prophet]. It was a crazy deadline. The editor said I'd miss the hundredth anniversary unless I pumped the thing out in six months, because I'd been delaying and dilly dallying for so long. So he both inspired me to get up early and write.

I don't think he would have had any trouble answering Justice Sonia Sotomayor's excellent challenge in a case involving GPS surveillance. She said we need an alternative to this whole way of thinking about the privacy now which says that when you give data to a third party, you have no expectations of privacy. And [Louis] Brandeis would have said nonsense, of course you have expectations of privacy because it's intellectual privacy that has to be protected. That's my attempt to channel him on some of those privacy questions.

[Louis] Brandeis had a very distinctive vision of political economy that he persuaded Woodrow Wilson to adopt in the 1912 election and that he largely enacted from the bench.

That strain of anti-monopoly crusading egalitarianism really runs throughout American history from [Tomas] Jefferson to Woodrow Wilson, that finds its apotheosis in [Louis] Brandeis, continues through the New Deal, but then it sort of peters out in the '60s because progressives in particular become more interested in extending equality to minorities, and women, and other excluded groups, and little more suspicious of these old white guys, often from the south, who were crusaders against monopolies.

It's unfortunate that [Louis] Brandeis was not able to translate or abstract his devotion to cultural pluralism and racial equality as he put it for Jews to enslave people and their descendants and to African Americans.

[Louis] Brandeis is writing directly to us. His clear voice comes through a century and he's speaking to us and he's galvanizing us and he's persuading us. And that's why I love to read the prose.

I'd say that [Louis] Brandeis practiced a kind of a "living originalism," to use the title of Jack Balkin's great book. He said you start with the paradigm case, which in the case of the Fourth Amendment was these general warrants or writs of assistance, but you define it at a level of abstraction that you can take it into our age and make it our own.