New paper: DOES AI HAVE RIGHTS? papers.ssrn.com/sol3/papers....

Social media use and well-being. www.cnn.com/2026/03/20/h...

A verdict from Claude.AI on my two coming books, one of which is on willingness to pay, one of which is on animal welfare: "Both books are better when Sunstein writes about his dogs than when he doesn't."

@jacklgoldsmith.bsky.social and @casssunstein.bsky.social on separation of powers. podcasts.apple.com/us/podcast/e...

In How to Interpret the Constitution, New York Times bestselling author @casssunstein.bsky.social makes a timely and powerful argument for rethinking how the U.S. Constitution is interpreted. Now available in #paperback! Learn more: press.princeton.edu/books/paperb... #History #USHistory #PoliSci

🎉 Exciting news! We're welcoming Cass Sunstein to the Better Food Foundation Board of Advisors! Cass is a University Professor at Harvard Law School, founder of Harvard's Program on Behavioral Economics, and co-author of Nudge — the landmark book that informs our work. Welcome Cass💚

My chapter in @worldhappiness.report, just out. www.worldhappiness.report/ed/2026/soci...

Memo to Self. papers.ssrn.com/sol3/papers....

Sunstein on Liberalism and AI Cass R. Sunstein (Harvard Law School; Harvard University - Harvard Kennedy School (HKS)) has posted Liberal AI on SSRN. Here is the abstract: Can AI be liberal? In what sense? One answer points to the liberal insistence on freedom of choice, understood as a product of…

ANIMALS MATTER. Coming next year. www.amazon.co.uk/Animals-Matt...

In How to Interpret the Constitution, New York Times bestselling author @casssunstein.bsky.social makes a timely and powerful argument for rethinking how the U.S. Constitution is interpreted. Now available in #paperback! Learn more: press.princeton.edu/books/paperb... #History #USHistory #PoliSci

Legal Theory Bookworm: “Decisions and Social Norms” by Ullmann-Margalit & Sunstein The Legal Theory Bookworm recommends Decisions and Social Norms by by Edna Ullmann-Margalit & Cass R. Sunstein. Here is a description: This pathbreaking book casts new light on how to handle life’s most difficult…

"This is a work that we need professional politicians, regardless of their country, to think about and internalise." — @financialtimes.com In "Separation of Powers," Cass Sunstein explains a balancing act that has puzzled the greatest adepts in political science: mitpress.mit.edu/978026205177...

Coming in the fall (and guaranteed to increase happiness). www.amazon.co.uk/Price-Happin...

A Canticle for Leibowitz. casssunstein.substack.com/p/a-canticle...

⬅️➡️ Out Now: Decisions and Social Norms by Edna Ullmann-Margalit and Cass R. Sunstein (@casssunstein.bsky.social) Learn more: www.e-elgar.com/shop/isbn/97... This pathbreaking book casts new light on how to handle life’s most difficult decisions.

Out today! @elgarpublishing.bsky.social www.e-elgar.com/shop/usd/dec...

The Cost-Benefit State Is Not Flourishing (very sad to say). casssunstein.substack.com/p/the-cost-b...

Publication day: This coming Tuesday. www.amazon.com/Decisions-So...

New book announcement! @cfcamerer.bsky.social www.cambridge.org/us/universit...

Join @casssunstein.bsky.social at @politicsprose.bsky.social for a talk on "Separation of Powers: How to Preserve Liberty in Troubled Times." 📆 Sat, March 14th 🕓 3:00 PM 📍5015 Connecticut Ave NW, D.C. (previous event rescheduled due to weather) Link for details: politics-prose.com/cass-sunstei...

On Preferring People to Algorithms. link.springer.com/article/10.1...

Out in one week. www.amazon.com/Decisions-So...

New paper: Five Objections to Commodification papers.ssrn.com/sol3/papers....

This is the best Substack ever. By far. casssunstein.substack.com/p/this-is-th...

Proximity Bias. @cfcamerer.bsky.social link.springer.com/article/10.1...

Proximity Bias (an autobiographical essay). @cfcamerer.bsky.social link.springer.com/article/10.1...

Legal Theory Bookworm: “Separation of Powers” by Sunstein The Legal Theory Bookworm recommends Separation of Powers: How to Preserve Liberty in Troubled Times by Cass R. Sunstein. Here is a descritpion: Why the separation of powers is essential to liberty and democracy. From the winner of the…

A review of On Liberalism. @ichotiner.bsky.social @katymilkman.bsky.social theceme.org/book_review/...

Very generous review of my new book, SEPARATION OF POWERS, in @financialtimes.com www.ft.com/content/f673...

Coming in 2027. My most personal book, and risky, I know. #AnimalsMatter @jeffsebo.bsky.social @raffaelfasel.bsky.social press.princeton.edu/books/hardco...

A Brisk Note on the Tariffs Case. casssunstein.substack.com/p/a-brisk-no...

Next week, @casssunstein.bsky.social delivers a talk at MIT Museum on his new book "Separation of Powers," an essential examination of the separation of powers and why it is necessary for both freedom and self-government Link for details: mitmuseum.mit.edu/programs/aut...

Coming soon from @elgarpublishing.bsky.social

Sunstein on Liberal AI Cass R. Sunstein (Harvard Law School; Harvard University - Harvard Kennedy School (HKS)) has posted Liberal AI on SSRN. Here is the abstract: Can AI be liberal? In what sense? One answer points to the liberal insistence on freedom of choice, understood as a product of the…

Coming soon from @elgarpublishing.bsky.social www.amazon.co.uk/Decisions-So...

📆 Tues. 2/17 at 7PM: Cass R. Sunstein—the Robert Walmsley University Professor at Harvard University—joins us for a discussion of his latest book, "Separation of Powers: How to Preserve Liberty in Troubled Times". Learn more here: buff.ly/Fn4S9oh

Proximity Bias. Forthcoming in much revised and expanded form in the Journal of Risk and Uncertainty. (Also this is the closest thing to an autobiography that I will ever write.) @cfcamerer.bsky.social papers.ssrn.com/sol3/papers....

Is a new book about the separation of powers, by Harvard legal scholar Cass Sunstein, remiss not to mention Trump? Matthew Reisz reports in today’s in-depth read https://ow.ly/BFJS50Yf9FM

Really honored to be appearing here and to celebrate the great Colin Camerer @sweiwang.bsky.social @cfcamerer.bsky.social

Writers Who Aren't Boring. casssunstein.substack.com/p/writers-wh...

Honored to be speaking at Oxford on "LIBERAL AI" in May. www.oxford-aiethics.ox.ac.uk/event/ethics...

Dropping early next week. www.amazon.com/Separation-P...

The Endangerment Finding. @ichotiner.bsky.social @cfcamerer.bsky.social @katymilkman.bsky.social @statmodeling.bsky.social casssunstein.substack.com/p/the-endang...

spoiler alert: this is one of the papers that will be included in the JEBO issue in honor of @cfcamerer.bsky.social stay tuned for more great papers in the issue.

PATERNALISM AFTER BEHAVIORAL ECONOMICS - 22 years in the making, just out in Journal of Economic Behavior and Organization. @cfcamerer.bsky.social @lsolum.bsky.social @michael-sanders.bsky.social @katymilkman.bsky.social www.sciencedirect.com/science/arti...

Join @casssunstein.bsky.social at @politicsprose.bsky.social for a talk on his new book, "Separation of Powers: How to Preserve Liberty in Troubled Times." 📆 Sun, Feb. 22nd 🕓 5:00 PM 📍Politics & Prose | 5015 Connecticut Ave NW, Washington, D.C. Link for details: politics-prose.com/event/2026-0...

"Separation of Powers" is an essential examination of the separation of powers and why it is necessary for both freedom and self-government. Join author @casssunstein.bsky.social at MIT Museum on Tues, Feb. 24th for a talk on this critical topic. Link for details: mitmuseum.mit.edu/programs/aut...

On political extremism and a terrific new book on that subject. casssunstein.substack.com/p/there-is-n...

BOUNDED RATIONALITY (probably my least-bad book in recent years, over 500 pp.). @cfcamerer.bsky.social @ichotiner.bsky.social @michael-sanders.bsky.social @katymilkman.bsky.social www.amazon.com/Bounded-Rati...