Marie de Rabutin-Chantal, Marquise de Sévigné (1626—1696) Madame de Sévigné was France’s preeminent writer of epistles in the seventeenth century. She appears at first glance to possess few philosophical credentials because she neither received formal philosophical instruction nor composed philosophical treatises. Yet in her extensive correspondence, De Sévigné develops a distinctive position on the philosophical disputes of her era. Rejecting the mechanistic account of nature,

Karl Popper: Critical Rationalism “Critical Rationalism” is the name Karl Popper (1902-1994) gave to a modest and self-critical rationalism. He contrasted this view with “uncritical or comprehensive rationalism,” the received justificationist view that only what can be proved by reason and/or experience should be accepted. Popper argued that comprehensive rationalism cannot explain how proof is possible and that it leads to inconsistencies. Critical rationalism today

Scientific Change How do scientific theories, concepts and methods change over time? Answers to this question have historical parts and philosophical parts. There can be descriptive accounts of the recorded differences over time of particular theories, notions, and methods—what might be called the shape of scientific change. Many stories of scientific change attempt to give more than statements of what, where and when change took

Charles Sanders Peirce: Architectonic Philosophy The subject matter of architectonic is the structure of all human knowledge. The purpose of providing an architectonic scheme is to classify different types of knowledge and explain the relationships that exist between these classifications. The architectonic system of C. S. Pierce (1839-1914) divides knowledge according to it status as a “science” and then explains the interrelation of these different scientific

Hipparchia (fl. 300 B.C.E.) Hipparchia is notable for being one of the few women philosophers of Ancient Greece. Drawn to the doctrines and the self-imposed hardships of the Cynic lifestyle, Hipparchia lived in poverty with her husband, Crates the Cynic. While no existing writings are directly attributed to Hipparchia, recorded anecdotal accounts emphasize both her direct, Cynic rhetoric and her nonconformity to traditional gendered roles.

Epistemic Circularity An epistemically circular argument defends the reliability of a source of belief by relying on premises that are themselves based on the source. It is a widely shared intuition that there is something wrong with epistemically circular arguments. William Alston, who first used the term in this sense, argues plausibly that there is no way to know or to be justified in believing