[letting the middle P of PPE have an airing]
When I was a newly-arrived undergrad, exposed for the first time to the idea of philosophy and the terms and characters of ethics, ‘consequentialism’, ‘deontology’, JS Mill and Immanuel Kant, I leapt to the glib conclusion that the utilitarians were obviously right and Kant (as I dimly understood him) wrong. How could duty matter more than happiness? How could doing something out of respect for the moral law matter more than the actual effects of your actions? Of course you’d lie to the axe murderer at your door!
But now, decades later, I find the calculations of utility less appealing, and the idea of acting out of a good will seems a stronger, firmer pole for a moral compass. If only consequences matter, not principles, there are so many excuses, so many get-out clauses available to weasel out of responsibility or honour: It doesn’t matter – no one will even know, everyone else does it, or: just one more plastic bottle in the sea causes less harm than the convenience to me… etc. etc.
But duty doesn’t let us off. It is, as Kant has it, categorical, absolute. And, like virtue (the third leg of the ethicist’s stool), it is a matter of who we are, not just what we do and the effects of our actions on the world.
You may say there’s no point in fighting a losing battle against climate change or tyranny. You can’t make any difference as an individual caught in the machine. Take the easy road, make the best of it, make hay while the sun shines. But duty (or virtue) says, ‘not in my name’. My small choices cannot stop the sixth extinction, but if the human species is to leave a world impoverished, I don’t want to be a thoughtless contributor to that end. Just so, citizens protest against the warmongering of their governments, in hope of effecting change of course, but beside hope, in acknowledgement of a moral imperative: this is wrong and I would not be part of it. ‘Duty’ is an old-fashioned word, but I have heard it lately, from the mouths of Earth Protectors, doing their best to preserve and restore ecosystems.
The other word that goes with ‘duty’ is ‘respect’, respect for the moral law, respect for moral agents as ends not means, respect for our own ability to choose, respect which applies absolutely, not just if it makes us (or the sum of us) happier. But when it comes to living together on this finite world, perhaps we need some virtues too – to counter the hubris of ‘treating humanity always as ends not just means’, of being ‘legislators in the kingdom of ends’ (Kant again) – primarily humility, and recognition that we are in not on the world.
We need the habit of respect for the ecosystem; we need not to have to deliberate about whether to buy that, throw that away, eat that, abstain from that. We need a way of living that makes the right things not necessarily easy to do, but easy to choose, because they come naturally. Individually, we need to hone the right instincts and habits; socially and politically, we need to build the right institutions, so that those institutions support and enable, rather than undermining and frustrating, our best intentions.

