From Bernard Boxill, professor of philosophy at the University of North Carolina at Chapel Hill and editor of Race and Racism, comes a tightly-argued, very illuminating book that will be essential reading for anyone interested in ...

This is a defense of black reparations using the theory of reparations set out in John Locke''s The Second Treatise of Government. I develop two main arguments, what I call the ``inheritance argument'''' and the ``counterfactual argument,''''both of which have been thought to fail. In no case do I appeal to the false ideas that present day United States citizens are guilty of slavery or must pay reparation simply because the U.S. Government was once complicit in the crime.

Kant claimed that we have a duty to seek peace, and encouraged a hope for peace to support that duty. To encourage that hope he argued that peace was reasonably likely. He thought that peace was reasonably likely because he believed that historical trends would create opportunities to implement his plan for peace. But authorities claim that globalization is undermining such opportunities. Consequently Kant's arguments can no longer sustain our hope for peace. We can sustain that hope by devising a (...) new plan for peace that globalization will give us opportunities to implement. But in order to devise such a plan we need to sustain our hope for peace. We can sustain such a hope by reflecting on the value of peace because hope is sustained not only by the belief that the object of hope is likely, but also by the conviction that it is valuable. In this way we can perhaps sustain a hope for peace that will support our duty to seek peace. But the fear of war and compassion for the victims of war may also support the duty to seek peace. Kant ignored these opportunities to support the duty to seek peace because they could support only the duty to avoid war. But Kant never showed that the duty to seek peace—as he saw it—outweighed the duty to avoid war. I conclude that Kant's arguments lead us to endless war rather than to peace. (shrink)

This study of the concept of orbit is intended to throw light on the nature of revolutionary concepts in science. We observe that Kepler transformed theoretical astronomy that was understood in terms of orbs [Latin: orbes] and models , by introducing a single term, orbit [Latin: orbita], that is, the path of a planet in space resulting from the action of physical causes expressed in laws of nature. To demonstrate the claim that orbit is a revolutionary concept we pursue three (...) lines of argument. First we trace the origin of the term; second, we document its development and specify the meaning of the novel term as it was introduced into astronomy by Kepler in his Astronomia nova . Finally, in order to establish in what sense the concept is revolutionary, we pay attention to the enduring impact that the concept has had on the relevant sciences, in this case astronomy and indeed physics. We claim that orbit is an instance of a revolutionary concept whose provenance and use can provide the insights we are seeking. (shrink)

In this paper, we analyze the astronomical tables in al-Zīj al-Muqtabis by Ibn al-Kammād (early twelfth century, Córdoba), based on the Latin and Hebrew versions of the lost Arabic original, each of which is extant in a unique manuscript. We present excerpts of many tables and pay careful attention to their structure and underlying parameters. The main focus, however, is on the impact al-Muqtabis had on the astronomy that developed in the Iberian Peninsula and the Maghrib and, more generally, on (...) the transmission and diffusion of Indian astronomy in the West after the arrival of al-Khwārizmī’s astronomical tables in al-Andalus (Muslim Spain) in the tenth century. This tradition of Indian origin competed with the Greek tradition represented by al-Battānī’s astronomical tables and was much more alive in the Iberian Peninsula and the Maghrib than previously thought. From Spain, the Indian tradition entered mainstream European astronomy, where we find echoes of it in all versions of the Alfonsine Tables, both in manuscript and in the printed editions (beginning in 1483), as well as in Copernicus’s De Revolutionibus, published in 1543. (shrink)

: We question the claim, common since Duhem, that sixteenth century astronomy, and especially the Wittenberg interpretation of Copernicus, was instrumentalistic rather than realistic. We identify a previously unrecognized Wittenberg astronomer, Edo Hildericus (Hilderich von Varel), who presents a detailed exposition of Copernicus's cosmology that is incompatible with instrumentalism. Quotations from other sixteenth century astronomers show that knowledge of the real configuration of the heavens was unattainable practically, rather than in principle. Astronomy was limited to quia demonstrations, although demonstration propter (...) quid remained the ideal. We suggest that Osiander's notorious preface to Copernicus expresses these sixteenth century commonplaces rather than twentieth century instrumentalism, and that neither `realism', nor `instrumentalism', in their modern meanings, apply to sixteenth century astronomy. (shrink)

: This study of the concept of orbit is intended to throw light on the nature of revolutionary concepts in science. We observe that Kepler transformed theoretical astronomy that was understood in terms of orbs [Latin: orbes] (spherical shells to which the planets were attached) and models (called hypotheses at the time), by introducing a single term, orbit [Latin: orbita], that is, the path of a planet in space resulting from the action of physical causes expressed in laws of nature. (...) To demonstrate the claim that orbit is a revolutionary concept we pursue three lines of argument. First we trace the origin of the term; second, we document its development and specify the meaning of the novel term as it was introduced into astronomy by Kepler in his Astronomia nova (1609). Finally, in order to establish in what sense the concept is revolutionary, we pay attention to the enduring impact that the concept has had on the relevant sciences, in this case astronomy and indeed physics. We claim that orbit is an instance of a revolutionary concept whose provenance and use can provide the insights we are seeking. (shrink)

Journal of Social Philosophy, EarlyView.

Although Frederick Douglass disclaimed any patriotism or love of the United States in the years when he considered its constitution to be pro-slavery, I argue that he was in fact always a patriot and always a lover of his country. This conclusion leads me to argue further that patriotism is not as expressly political as many philosophers suppose. Patriots love their country despite its politics and often unreasonably, although in loving their country they are concerned with its politics. The greatest (...) among them freely dedicate themselves selflessly to the improvement of their country, partly because they love it, and partly because they are moved to take on great projects. (shrink)

Although Frederick Douglass disclaimed any patriotism or love of the United States in the years when he considered its constitution to be pro-slavery, I argue that he was in fact always a patriot and always a lover of his country. This conclusion leads me to argue further that patriotism is not as expressly political as many philosophers suppose. Patriots love their country despite its politics and often unreasonably, although in loving their country they are concerned with its politics. The greatest (...) among them freely dedicate themselves selflessly to the improvement of their country, partly because they love it, and partly because they are moved to take on great projects. (shrink)

Journal of Social Philosophy, EarlyView.

Journal of Social Philosophy, EarlyView.

We will examine Kepler's use of a relation between velocity and distance from a centre of circular motion. This relation plays an essential role, through a derivation in chapter 40 of the Astronomia Nova, in the presentation of the Area Law of planetary motion. Kepler transcends ancient and contemporary applications of the distance-velocity relation by connecting it with his metaphysical commitment to the causal role of the Sun. His second main innovation is to replace the astronomical models of his predecessors (...) with an account that derives trajectories from physical principles. In this paper we restrict our attention primarily to the first 40 chapters of Kepler's Astronomia Nova. Hence, we do not discuss Kepler's discovery of elliptical planetary orbits. (shrink)

Levi ben Gerson was a medieval astronomer who responded in an unusual way to the Ptolemaic tradition. He significantly modified Ptolemy’s lunar and planetary theories, in part by appealing to physical reasoning. Moreover, he depended on his own observations, with instruments he invented, rather than on observations he found in literary sources. As a result of his close attention to the variation in apparent planetary sizes, a subject entirely absent from the Almagest, he discovered a new phenomenon of Mars and (...) noticed a serious flaw in Ptolemy’s treatment of the Moon. (shrink)