The philosophy of Albert Schweitzer has proved widely influential in modern thinking, especially in the field of ethics. His leading ethical idea can be summarized in the phrase "reverence for life" - namely, that good consists in maintaining and perfecting life, and evil consists in destroying and obstructing life. For Schweitzer, all life is sacred. Ethics thus deals with human attitudes and behavior toward all living beings.Unlike many moral philosophers, Schweitzer argues that knowledge of human nature does not provide a (...) sufficient foundation for any adequate moral theory. That is why he bases his ethics on much broader foundations, articulated in his philosophy of civilization and the philosophy of religion. Schweitzer argues that the material aspect of our civilization has become far more important than its spiritual counterpart. Even organized religion has put itself in the service of politics and economy, thereby losing its vitality and moral authority.Schweitzer's ethics of reverence for life, argues Predrag Cicovacki, offers a viable alternative at a time when traditional ethical theories are found inadequate. Schweitzer's robust and un-dogmatic idealism may offer the best antidote to the prevailing relativism and nihilism of the postmodern epoch. His ethical vision directs us toward a new way of building a more just and more peaceful world. Collecting sixteen of Schweitzer's most effective essays, this volume serves as a compelling introduction to this remarkable thinker and humanist. (shrink)

This collection of original papers on the special and general theories of relativity constitutes an indispensable part of a library on relativity. Here are the 11 papers that forged the general and special theories of relativity: seven papers by Einstein, plus two papers by Lorentz and one each by Minkowski and Weyl.

It is known that Maxwell’s electrodynamics—as usually understood at the present time—when applied to moving bodies, leads to asymmetries which do not appear to be inherent in the phenomena. Take, for example, the reciprocal electrodynamic action of a magnet and a conductor. The observable phenomenon here depends only on the relative motion of the conductor and the magnet, whereas the customary view draws a sharp distinction between the two cases in which either the one or the other of these bodies (...) is in motion. For if the magnet is in motion and the conductor at rest, there arises in the neighbourhood of the magnet an electric field with a certain definite energy, producing a current at the places where parts of the conductor are situated. But if the magnet is stationary and the conductor in motion, no electric field arises in the neighbourhood of the magnet. In the conductor, however, we find an electromotive force, to which in itself there is no corresponding energy, but which gives rise—assuming equality of relative motion in the two cases discussed—to electric currents of the same path and intensity as those produced by the electric forces in the former case. Examples of this sort, together with the unsuccessful attempts to discover any motion of the earth relatively to the “light medium,” suggest that the phenomena of electrodynamics as well as of mechanics possess no properties corresponding to the idea of absolute rest. They suggest rather that, as has already been shown to the first order of small quantities, the same laws of electrodynamics and optics will be valid for all frames of reference for which the equations of mechanics hold good.1 We will raise this conjecture (the purport of which will hereafter be called the “Principle of Relativity”) to the status of a postulate, and also introduce another postulate, which is only apparently irreconcilable with the former, namely, that light is always propagated in empty space with a definite velocity c which is independent of the state of motion of the emitting body.. (shrink)

Of the nature and origin of the mind, by B. de Spinoza.--Spinoza and the theory of organism, by H. Jonas.--Man a machine, and The natural history of the soul, by J. O. de la Mettrie.--On the first ground of the distinction of regions in space, and What is orientation in thinking? by I. Kant.--Soul and body, by J. Dewey.--The philosophical concept of a human body, by D. C. Long.--Are persons bodies? By B. A. O. Williams.--Lived body, environment, and ego, by (...) M. Scheler.--Metaphysical journal, and A metaphysical diary, by G. Marcel.--The body, by J.-P. Sartre.--The spatiality of the lived body and motility, by M. Merleau-Ponty.--Anthropodology: man a-foot, by R. M. Griffith.--Man and his body, by H. Plügge.--The nobility of sight: a study in the phenomenology of the senses, by H. Jonas.--Born to see, bound to behold: reflections on the function of upright posture in the esthetic attitude, by E. W. Straus.--Selected reading (p. [363]-367). (shrink)

Weinberg's 1972 work, in his description, had two purposes. The first was practical to bring together and assess the wealth of data provided over the previous decade while realizing that newer data would come in even as the book was being printed. He hoped the comprehensive picture would prepare the reader and himself to that new data as it emerged. The second was to produce a textbook about general relativity in which geometric ideas were not given a starring role for (...) (in his words) too great an emphasis on geometry can only obscure the deep connections between gravitation and the rest of physics. (shrink)

What is unique about China is the agreement on all sides that men are naturally equal. This is the second of our two central themes. ...