In her brilliant new book, Martha Nussbaum argues for a thrilling vision: the whole biosphere conceived and treated as a “cosmic city,” in which humans carefully do their part to ensure that the capabilities of all creatures can be activated as much as possible.

The quest for profit goes too far, he said, when businesses desert the workers and communities that made them profitable in the first place simply to make goods more cheaply in other countries.

Signatories of two recent open letters, one embracing a “new nationalism” and the other warning of its dangers, engage each other's concerns and questions.

If solidarity extends only as far as national or cultural borders, refugees will not receive the support they need.

Healing teeth can be a first step in restoring hope and giving us a chance to tell a new story with our lives.

Everybody would get this money, regardless of their wealth or income: you, your mom, Bill Gates. The payments would be made for life.