To have moral worth, our actions must be motivated by duty, rather than mere sympathy or inclination. As a paradigm of moral worth, Kant upheld the hard-hearted person who acts purely out of duty.

Editor’s note: Don’t miss our comprehensive guide to Russia’s war against Ukraine. Appeals for bolder action in Ukraine will understandably only grow more intense as the appalling humanitarian toll ...

The circular economy requires us to maximise the use of our resources. As they become more constrained, designing out waste is a global imperative – not a nice-to-have, writes Dr William M. Nelson.