Described by the philosopher A.J. Ayer as a work of 'great originality and power', this book revolutionized contemporary thinking on science and knowledge. Ideas such as the now legendary doctrine of 'falsificationism' electrified the scientific community, influencing even working scientists, as well as post-war philosophy. This astonishing work ranks alongside The Open Society and Its Enemies as one of Popper's most enduring books and contains insights and arguments that demand to be read to this day.

In section i, I sketch the main arguments to date for legal moralism, And show the ways in which they are unpersuasive. In sections ii and iii, I sketch and evaluate a seemingly compelling argument, Dependent on the concept of wrongful conduct, For the weak thesis that the immorality of conduct is a reason, But not a sufficient reason for making it illegal. Despite the apparent persuasiveness of this argument, The particular conclusions of the legal moralist, That various non-Harmful immoralities (...) ought on balance to be criminal, Do not obviously follow. Finally, Once the argument for the weak thesis is understood, Even its initial persuasiveness is undermined by considerations of legal philosophy. (shrink)

A scientific community cannot practice its trade without some set of received beliefs. These beliefs form the foundation of the "educational initiation that prepares and licenses the student for professional practice". The nature of the "rigorous and rigid" preparation helps ensure that the received beliefs are firmly fixed in the student's mind. Scientists take great pains to defend the assumption that scientists know what the world is like...To this end, "normal science" will often suppress novelties which undermine its foundations. Research (...) is therefore not about discovering the unknown, but rather "a strenuous and devoted attempt to force nature into the conceptual boxes supplied by professional education". (shrink)

Thomas S. Kuhn's classic book is now available with a new index.

No study in the philosophy of science created such controversy in the seventies as Paul Feyerabend's Against Method. In this work, Feyerabend reviews that controversy, and extends his critique beyond the problem of scientific rules and methods, to the social function and direction of science today. In the first part of the book, he launches a sustained and irreverent attack on the prestige of science in the West. The lofty authority of the "expert" claimed by scientists is, he argues, incompatible (...) with any genuine democracy, and often merely serves to conceal entrenched prejudices and divided opinions with the scientific community itself. Feyerabend insists that these can and should be subjected to the arbitration of the lay population, whose closes interests they constantly affect—as struggles over atomic energy programs so powerfully attest. Calling for far greater diversity in the content of education to facilitate democratic decisions over such issues, Feyerabend recounts the origin and development of his own ideas—successively engaged by Brecht, Ehrenhaft, Popper, Mill and Lakatos—in a spirited intellectual self-portrait. Science in a Free Society is a striking intervention into one of the most topical debates in contemporary culture and politics. (shrink)

This article distinguishes and evaluates the various forms of legal moralism from a liberal vantage point. It devotes special attention to the most plausible form of the theory, That which is often called "the conservative thesis," and to that supporting argument which is based on the need to prevent "freefloating social-Change evils." freefloating evils are defined as evils that are imputable to human beings but which do not give rise to personal grievances as harms, Offenses, And "harmless exploitative injustices" do. (...) I conclude that the need to prevent such evils is a relevant, But generally inferior, Reason for coercion. (shrink)

Seven essays delivered as lectures in Britain and U.S.A.