Jan Narveson

What do we owe to the lower animals, if anything? The issues raised by this question are among the most fascinating and fundamental in ethical theory. They provide a real watershed for the moral philosopher and, on perhaps the most widely professed view, a trenchant test of consistency in ethical practice. Among the virtues of these two challenging books is that they make painfully clear that there has been a paucity of clear and plausible argument in support of the nearly universal tendency of humans to eat animal flesh, and to visit varying degrees of pain, discomfort, and unfreedom on the animals in question in the process.When we are asked why it is all right to do this, given our strong belief that it is not all right for us to eat other humans, we tend to give answers that won't readily wash. We may say, for example, that animals are stupid; but we don't think it all right to eat stupid people, including people less apparently competent than many of the higher animals. Or we may say things that are patently untrue, such as that the other animals don't really feel pain anyway.

The argument in this paper is that although rationality and morality are distinguishable concepts, there is nevertheless a rational morality, a set of principles, namely, which it is rational of all to require of all. The argument of this paper is that such a morality would certainly issue in a general condemnation of aggressive war. (Whether this also makes it irrational for States to engage in such activities is another, and not entirely settled, matter). Correlatively, it would issue in a strong right of defense. Would this right be sufficient to include resort to nuclear deterrence, if need be? It is argued that the answer must be in the affirmative - although the question of ‘need’ is by no means settled in current circumstances.

The argument of the "Invisible Hand" is that the system of free enterprise benefits society in general even though it is not the aim of any particular economic agent to do that. This article proposes an analysis of why this is so. The key is that the morality of the market forbids only force and fraud; it does not require people to do good to others. Nevertheless, when all transactions are voluntary to both parties, that is exactly what we can expect to happen. This is both because the sum of the benefits of innumerable transactions, which are beneficial to both parties, is very great, but also and especially because of Positive Externalities. People use the particular products and services they get in market exchanges in ways that benefit others in ways not at all foreseen by the agents to those transactions at the time. These externalities range from the benefits of invention and ingenuity to the exercise of charity and philanthropy, all of which flourish in developed capitalist societies