This chapter of the handbook introduces readers to the field of moral psychology as a whole and provides them with a guide to the volume. The authors delineate the landscape of morality in terms of five phenomena extensively studied by moral psychologists: moral behavior, moral judgments, moral sanctions, moral emotions, and moral communication, all against a background of moral standards. They then provide brief overviews of research on a few topics not assigned a dedicated chapter in the book (e.g., the moral psychology of artificial intelligence, free will, and moral responsibility), noting several other topics not treated in depth (e.g., the neuroscience of morality, links between moral and economic behavior, moral learning). In the last section of the chapter, the authors summarize each of the contributed chapters in the book.

This paper presents the main topics, arguments, and positions in the philosophy of AI at present (excluding ethics). Apart from the basic concepts of intelligence and computation, the main topics of artificial cognition are perception, action, meaning, rational choice, free will, consciousness, and normativity. Through a better understanding of these topics, the philosophy of AI contributes to our understanding of the nature, prospects, and value of AI. Furthermore, these topics can be understood more deeply through the discussion of AI; so we suggest that “AI philosophy” provides a new method for philosophy.

Boethius’ initial question in the Consolation of Philosophy is why God, who orders the natural universe beautifully, would allow human affairs to proceed in a chaotic fashion, even permitting the wicked to trample on the virtuous and go unpunished. Lady Philosophy responds that God governs everything well. What seem to limited human beings to be misfortunes can all be turned to good. This introduces the importance of human free will and a perennial question for Christian philosophers: If God foreknows future choices, can they be free? Human foreknowledge is a sign that the foreknown event does not happen voluntarily. God, being eternal, sees all time as present, and so divine foreknowledge does not impose or indicate any necessity that would conflict with free will. Boethius concludes by expressing theist compatibilism: Even free choices fall under the absolute sovereignty of God.

This chapter surveys some of the ways in which the Copenhagen interpretation of quantum mechanics has led to a various views of the world with spiritual and moral implications; the perspective of this chapter is that most of these views are not demanded by the actual theory and experiments of quantum mechanics.

The Cambridge Platonists’ philosophy of religion might be summed up as a tension between their commitment to the fixed nature of reason and goodness on the one hand and a commitment to freedom and distaste for all forms of tyranny and imposition on the other. This last chapter contends that the Cambridge Platonists not only acknowledge this tension, but embrace it, revelling in the paradoxical way that absolute fixedness and absolute freedom come together at the highest levels of being. This is made possible by what Stephen Darwall (writing specifically of Cudworth) has identified as an early theory of ‘practical reason’. This Platonic theory of practical reason draws together all the elements of the Cambridge Platonists’ outlook considered in earlier chapters – moral realism, divine communicative intent, and participatory epistemology, illustrating the extent to which this Platonic outlook binds together not only the thought of Whichcote, More, Cudworth and Smith but also runs through each of their views on different philosophical topics such as obligation, freedom and pedagogy.

The chapter views automatism in the light of the Victorian emphasis on the value of free will and individual responsibility. Daily life involved repeated practical synthesis of contradictory judgments about the determined, or automatic, and moral sources of action. Criminal court cases in which there was a defense of insanity exemplified the issues at stake in relating the disordered brain and the moral will. In the Victorian period, medical experts began to play a large part in legal judgments about insanity and criminal responsibility, and they articulated evidence for the involuntary, or automatic, form of insane actions. Public interest in these issues preceded and informed debate about automatism in philosophy and science. The chapter uses a spectacular 1854 case of multiple child murder by the children’s mother to shape discussion of the wider issues. The case both shows the complexity of social issues touching on automatism and offers insight into the imagination that accompanied Victorian fears about automatism replacing free will.

It may seem odd that Rudolf Carnap chose to include in his philosophy of science textbook a whole chapter on the problem of free will and determinism. The problem, or better a tangle of related problems, had exercised metaphysicians and ethicists for thousands of years. And by his own account Carnap engaged in neither metaphysics nor ethics and wanted to leave traditional philosophy behind him. So, on the face of it, the chapter presents us with a puzzle about Carnap as well as about free will and determinism. Rather than a full treatment of the traditional issues, the chapter was a response to a then recent paper by Hans Reichenbach that argued that the deterministic laws of classical physics preclude genuine choice as well as any meaningful freedom. Reichenbach goes on to argue that if, however, the fundamental laws are statistical as in quantum mechanics, both choice and freedom are restored. Carnap rejects both of Reichenbach’s conclusions and in the process addresses questions about how we are to understand laws of nature and causation as well as freedom and choice. This chapter examines and assesses Carnap’s arguments and asks whether they amount to a deviation from his anti-metaphysical stance.

In recent times, self-interest has been seen as the main driving force of behaviour and function in organisms. This is particularly evident in the concept of the selfish gene. However, as elaborated in this book, living systems strongly depend on cooperative behaviour, which is found everywhere in nature. All the way from millions of minute bacteria cooperating in the way they feed and grow, to massive whales talking with each other across oceans, organisms communicate with each other, and that communication is used as the glue of cooperation, even between distinct species. The idea of nature as ‘red in tooth and claw’ is at best a distorted perspective of the entirety of nature. However, in the grand scheme of things, both cooperation and competition are part of the story, and – whether wittingly or unwittingly – organisms form part of and interact with their ecosystems.

The view of living systems as machines is based on the idea of a fixed sequence of cause and effect: from genotype to phenotype, from genes to proteins and to life functions. This idea became the Central Dogma: the genotype maps to the phenotype in a one-way causative fashion, making us prisoners of our genes.