We need to protect the same amount of cognitive liberty in an age where you can invade people's thoughts without physically intruding into their homes than you did at the time of the framing.

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.

Do you think Bernie Sanders, for example, is citing Theodore Roosevelt as the progenitor of his critique of the banks when actually Roosevelt wanted to keep the banks together and regulate them.

Whenever I felt tempted to, I don’t know, watch cat videos or bad Netflix TV instead of writing this Brandeis biography, I thought of his stern but kindly visage and buckled down and wrote the damn thing, because there’s so much information out there, and these are such anxious times in democracy, such unreasonable times.

We need to protect the same amount of cognitive liberty in an age where you can invade people's thoughts without physically intruding into their homes than you did at the time of the framing.

[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.

Louis Brandeis started off by embracing the Theodore Roosevelt notion that hyphenated Americanism was unpatriotic. You couldn't have dual loyalties. But then he thinks and he reads and he becomes the head of the American Zionist movement after having previously been a secular Jew in this amazing intellectual evolution.