The impoverishment of economics related to its distancing from ethics affects both welfare economics (narrowing its reach and relevance) and predictive economics (weakening its behavioural foundations). On Ethics and Economics (1991)
It is arguable that a closer contact between ethics and economics can be beneficial not only to economics but even to ethics. Many ethical problems have what we have been calling 'engineering' aspects, and some of them do, in fact, involve economic relations. On Ethics and Economics (1991)