What Else Science Requires of Time This article is one of the two supplements of the main Time article. The other is “Frequently Asked Questions about Time.” Table of Contents What are Theories of Physics? The Core Theory Relativity Theory Quantum Theory The Standard Model Big Bang Cosmic Inflation Eternal Inflation and the Multiverse Infinite Time 1. What are Theories of Physics? The answer to

Rights and Obligations of Parents Historically, philosophers have had relatively little to say about the family. This is somewhat surprising, given the pervasive presence and influence of the family upon both individuals and social life. Most philosophers who have addressed issues related to the parent-child relationship—Kant and Aristotle, for example—have done so in a fairly terse manner. At the end of the twentieth century, this changed.

Fictionalism in the Philosophy of Mathematics The distinctive character of fictionalism about any discourse is (a) recognition of some valuable purpose to that discourse, and (b) the claim that that purpose can be served even if sentences uttered in the context of that discourse are not literally true. Regarding (b), if the discourse in question involves mathematics, either pure or applied, the core of the

Sartre’s Political Philosophy French philosopher Jean-Paul Sartre (1905-1980), the best known European public intellectual of the twentieth century, developed a highly original political philosophy, influenced in part by the work of Hegel and Marx. Although he wrote little on ethics or politics prior to World War II, political themes dominated his writings from 1945 onwards. Sartre co-founded the journal Les Temps Modernes, which would publish