Maybe we will get to this point and reach a decision one way or the other with 'Human cloning is acceptable,' but I doubt that it is ever going to happen for 'It is morally permissible to eat shrimp' or with the general formula 'Adultery is wrong,' whose intended extension is again very unclear.

You can find many philosophy papers on the themes of 'love' and 'friendship,' most of which are cheerful and somewhat anodyne; you don't find many on the loss of friends, relatives, and lovers from death or alienation, though it happens all the time.

We are now returning to the 18th century empirical approach with the new interest in the evolutionary basis of ethics, with 'experimental' moral philosophy and moral psychology. As a result, we understand better why moral formulas are experienced as ineluctable commands, even if there is no commander and even if the notion of an inescapable obligation is just superstition. So moral philosophy has made huge progress.

Leibniz accepted the argument that there must be indestructible simple entities if there is to be a complex world, but Epicurean morals and politics and anti-theology dismayed him. His 'monadology' which said that the true atoms of nature were unextended 'living mirrors,' was an imaginative and beautiful system, and even in many ways more modern than Epicurean atomism, than Epicurean atomism, but there was a reactionary aspect to it.

We use and need to use both systems in complex political societies, and we oscillate in our commitments, because both oligarchy and rule by the will of masses have their bad points, as the ancient philosophers all knew.

There is no single test or formula for producing moral progress anymore than there is for generating scientific truths. It is a process involving theoreticians, fact-gatherers, protestors, martyrs for the cause, authors of first- person narratives who change the way we see and evaluate the distribution of harms and benefits.

Oddly, since by now I've written quite a lot on early modern philosophers, I didn't care for the history of philosophy, which I thought dull and obscure, until I got a minor job writing articles for a children's encyclopedia in the history of science and began to make connections between science and philosophy.