Paul Karl Feyerabend was born on January 13, 1924, in Vienna, Austria, into a city that was then the epicenter of European intellectual life and would soon become ground zero for some of the century's defining catastrophes. His origins were modest. His paternal grandfather was the illegitimate child of a housekeeper named Helena Feierabend, who introduced the now-distinctive y into the family name. His father, originally from Carinthia, had served as a merchant marine officer during the First World War before becoming a civil servant in Vienna, where he died from complications following a stroke. His mother, a seamstress whose family came from Stockerau, died on July 29, 1943, by suicide, a loss that shadowed the young Feyerabend's experience of the war years.
The Vienna of Feyerabend's youth was a world of extraordinary intellectual ferment, home to the Vienna Circle of logical positivists, to the competing visions of Karl Popper and Otto Neurath, and to a culture that placed philosophy, science, and the arts in close and sometimes contentious conversation. Feyerabend absorbed these influences as he grew up, developing a curiosity that refused to respect disciplinary boundaries and a temperament that was constitutionally resistant to orthodoxy.
After the war, Feyerabend pursued studies in physics and philosophy, eventually making his way into the circles of academic philosophy where his provocative intellect first began to draw serious attention. His academic career was launched when he began as a lecturer in philosophy of science at the University of Bristol from 1955 to 1958. He then moved to the University of California, Berkeley, where he taught for three decades, from 1958 to 1989, becoming one of that institution's most famous and most attended professors. His lectures drew international visitors, and his classroom manner was reportedly as theatrical as it was intellectually demanding.
Throughout his career he held joint appointments and gave lecture series at a remarkable spread of institutions: University College London from 1967 to 1970, the London School of Economics in 1967, the Free University of Berlin in 1968, Yale University in 1969, the University of Auckland in 1972 and 1975, the University of Sussex in 1974, the University of Minnesota from 1958 to 1962, Stanford University in 1967, the University of Kassel in 1977, the University of Trento in 1992, and the ETH Zurich from 1980 to 1990. The breadth of his academic footprint reflected both the demand for his presence and his restlessness as a thinker.
The work for which Feyerabend became most famous, and most controversial, was his 1975 book Against Method. In it he argued that there are no universally valid methodological rules for scientific inquiry, that science has historically advanced not by following a fixed and rational methodology but by violating rules, exploiting anomalies, and proceeding through what he called epistemological anarchy. The phrase that most succinctly captured his position was anything goes, a slogan that his critics took to mean a casual relativism but that Feyerabend insisted was a more nuanced claim about the historical flexibility of successful science. The book was immediately controversial, celebrated by some as a liberating corrective to the myth of scientific rationalism and condemned by others as an invitation to irrationalism.
His 1978 book Science in a Free Society extended his arguments into political philosophy, addressing questions about the relationship between science and democratic governance and challenging the privileged status that scientific expertise claimed in public life. Feyerabend argued that citizens in a democracy should not simply defer to scientific consensus on questions of value and policy, a position that generated further debate about the proper boundaries between expert knowledge and democratic deliberation.
His later works continued to range across an unusually wide intellectual terrain. Wissenschaft als Kunst, or Science as Art, appeared in 1984; Farewell to Reason followed in 1987; Three Dialogues on Knowledge in 1991. His posthumously published Conquest of Abundance, released in 1999, collected essays exploring his longstanding concern with the way that Western rationalism had suppressed the abundance and complexity of lived experience by imposing abstract categories on a world that exceeded them. An earlier draft work was published posthumously in 2009 as Naturphilosophie and later translated as Philosophy of Nature, containing his reconstruction of the history of natural philosophy from the Homeric period through the mid-twentieth century. He completed an autobiography, Killing Time, on his deathbed.
In a 2010 poll of philosophers, Feyerabend was ranked as the eighth most significant philosopher of science, a recognition of his enduring influence on the field. His name is regularly cited alongside Thomas Kuhn, Imre Lakatos, and N. R. Hanson as one of the central figures in the historical turn that transformed philosophy of science in the second half of the twentieth century. His work on scientific pluralism left a particularly strong mark on what became known as the Stanford School and on much contemporary philosophy of science, and he was also recognized as a significant figure in the sociology of scientific knowledge.
In 1970, Loyola University of Chicago awarded him an honorary Doctor of Humane Letters degree. Asteroid (22356) Feyerabend was named in his honor. The Paul K. Feyerabend Foundation, established in 2006, was created to advance his humanistic commitments by supporting disadvantaged communities, promoting cultural and biological diversity, and strengthening human rights. His obituary by the philosopher Ian Hacking captured something essential about him: a humanist in the fullest sense, equally at home in the arts and sciences, and genuinely fun. Paul Karl Feyerabend died on February 11, 1994, at the age of seventy, leaving behind a body of work that had permanently complicated the way scientists and philosophers thought about what science actually was and how it actually worked.
