Life after Privacy:  Reclaiming Democracy in a Surveillance Society. Cambridge University Press, 2020.

The Stone Reader: Modern Philosophy in 133 Arguments. Liveright, 2015.

Do Guns Make Us Free? Democracy and the Armed Society. Yale University Press, 2015.

Spinoza and the Stoics. Bloomsbury, 2010

Stoicism: Traditions and Transformations. Cambridge University Press, 2004.