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] insisted on the necessity of public reason, which he thought could only be achieved if all of us just take the time to inform ourselves about the best arguments on all sides of questions so that we can make up our own minds.

The historical resonances are sharp. [Louis] Brandeis is nominated on Jan. 28, 1916. Confirmed on June 1. Waits 125 days between nomination and confirmation, which remains an unbroken record, although Merrick Garland will surpass it in July, if my math is right. Anti-Semitism was definitely not the central reason for the opposition, which tended to focus more on his anti-corporate radicalism, but it was a theme.

I came to believe that actually [Louis] Brandeis tended to uphold laws that he liked and strike down those that he didn't, generally strike down centralizing federal agencies in the New Deal, and uphold state economic experimentation.

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.

[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.

[Louis Brandeis] believes in natural rights of speech and liberty and the right to pursue happiness.