Climate Change, Individual Obligations and the Virtue of Justice

Over the last decade, a number of climate ethicists have turned their attention to the question of individual moral obligations to reduce greenhouse gas emissions. Important problems face their efforts, especially what is called the problem of inconsequentialism. The problems, I argue, arise largely from the failure to treat individual obligations as a matter of justice, a failure that stems from the common modern assumption that justice primarily concerns social institutions. I develop an alternative approach by appealing to the account of justice as a virtue in Thomas Aquinas. This approach allows us to talk about individual obligations to reduce emissions as obligations of justice, even in the current context of institutional failure. At the same time, I argue that approaching climate change in Thomistic terms requires an important modification of Aquinas's understanding of justice.