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Philosophers

Mortimer Adler
Rogers Albritton
Alexander of Aphrodisias
G.E.M.Anscombe
Thomas Aquinas
Aristotle
David Armstrong
Augustine
A.J.Ayer
Mark Balaguer
William Belsham
Henri Bergson
Isaiah Berlin
Bernard Berofsky
Susanne Bobzien
Emil du Bois-Reymond
George Boole
Émile Boutroux
F.H.Bradley
C.D.Broad
C.A.Campbell
Joseph Keim Campbell
Carneades
Ernst Cassirer
Roderick Chisholm
Chrysippus
Cicero
Randolph Clarke
Samuel Clarke
Donald Davidson
Democritus
Daniel Dennett
René Descartes
Richard Double
Fred Dretske
John Earman
Laura Waddell Ekstrom
Epictetus
Epicurus
John Martin Fischer
Owen Flanagan
Philippa Foot
Alfred Fouilleé
Harry Frankfurt
Richard L. Franklin
Carl Ginet
Nicholas St. John Green
Ian Hacking
Ishtiyaque Haji
Stuart Hampshire
Georg W.F. Hegel
Martin Heidegger
R.E.Hobart
Thomas Hobbes
David Hodgson
Shadsworth Hodgson
Ted Honderich
Pamela Huby
David Hume
William James
Robert Kane
Immanuel Kant
Tomis Kapitan
Christine Korsgaard
Keith Lehrer
Gottfried Leibniz
Leucippus
C.I.Lewis
David Lewis
Peter Lipton
John Locke
John R. Lucas
Lucretius
Hugh McCann
Colin McGinn
Michael McKenna
Alfred Mele
John Stuart Mill
Dickinson Miller
G.E.Moore
Thomas Nagel
Friedrich Nietzsche
P.H.Nowell-Smith
Robert Nozick
William of Ockham
Timothy O'Connor
Charles Sanders Peirce
Derk Pereboom
Steven Pinker
Plato
Karl Popper
H.A.Prichard
Hilary Putnam
Willard van Orman Quine
Frank Ramsey
Ayn Rand
Thomas Reid
Charles Renouvier
Nicholas Rescher
C.W.Rietdijk
Josiah Royce
Bertrand Russell
Paul Russell
Gilbert Ryle
T.M.Scanlon
Moritz Schlick
Arthur Schopenhauer
John Searle
Henry Sidgwick
Walter Sinnott-Armstrong
J.J.C.Smart
Saul Smilansky
Michael Smith
L. Susan Stebbing
Galen Strawson
Peter Strawson
Eleonore Stump
Richard Taylor
Kevin Timpe
Peter van Inwagen
Manuel Vargas
John Venn
Kadri Vihvelin
Voltaire
G.H. von Wright
R. Jay Wallace
Ted Warfield
Roy Weatherford
Alfred North Whitehead
David Widerker
David Wiggins
Ludwig Wittgenstein
Susan Wolf

Scientists

Michael Arbib
Bernard Baars
John S. Bell
Charles Bennett
Margaret Boden
David Bohm
Neils Bohr
Ludwig Boltzmann
Max Born
Leon Brillouin
Stephen Brush
Henry Thomas Buckle
Anthony Cashmore
Arthur Holly Compton
John Conway
Abraham de Moivre
Paul Dirac
John Eccles
Arthur Stanley Eddington
Albert Einstein
Richard Feynman
Joseph Fourier
GianCarlo Ghirardi
Nicolas Gisin
A.O.Gomes
Joshua Greene
Jacques Hadamard
Martin Heisenberg
Werner Heisenberg
Pascual Jordan
Simon Kochen
Stephen Kosslyn
Rolf Landauer
Alfred Landé
Pierre-Simon Laplace
David Layzer
Benjamin Libet
Josef Loschmidt
Ernst Mach
Henry Margenau
James Clerk Maxwell
Ernst Mayr
Jacques Monod
Roger Penrose
Steven Pinker
Max Planck
Henri Poincaré
Adolphe Quételet
Jerome Rothstein
Erwin Schrödinger
Claude Shannon
Herbert Simon
B. F. Skinner
Antoine Suarez
Leo Szilard
William Thomson (Kelvin)
John von Neumann
Daniel Wegner
Steven Weinberg
Norbert Wiener
Eugene Wigner
E. O. Wilson
Ernst Zermelo
 
C. A. Campbell

C. A. (Charles Arthur) Campbell's inaugural address at Glasgow University in 1938, In Defence of Free Will, attempted to restore sensible discussion to a problem he regarded as unparalleled in the history of metaphysics.
Since Bertrand Russell, Moritz Schlick, and Ludwig Wittgenstein, philosophy had turned to logical positivism (or logical empiricism) and linguistic analysis. Free will had been declared a pseudo-problem (by Schlick) that could not be solved, only dis-solved, by careful attention to the use of language.

Logical positivists delighted in framing such problems in terms that revealed impossibilities, contradictions, paradoxes, or category mistakes. Free will was declared "unintelligible," a term previously reserved for the concept of absolute chance.

Campbell argued that a free choice must involve an "effort" of the will. He said only choices made from "duty" were really uncaused. Choices based on desires were caused by those desires. This is the Kantian view and what we call the ethical fallacy. Kant said that we are free only when our actions are good. When our actions are bad, he said, we are slaves to our passions.

Campbell was negative about involving quantum indeterminacy in free will:

"I am not myself...disposed to rest any part of the case against universal determinism upon these recent dramatic developments of physical science."
(In Defence of Free Will, p.45)

A dozen years later, a specific aspect of the free will problem that continues to concern even libertarians today was addressed by Campbell in his essay Is Free Will A Pseudo-Problem?. Campbell showed that Schlick's analysis of the problem was severely limited - to questions of external compulsion and the usefulness of punishment for "educative reasons." But Campbell took up a more difficult question - "Could one have done otherwise?" or the modern, "Could one do otherwise in exactly the same circumstances?"

In his Ethics, G. E. Moore in 1912 had argued it could only mean "could have done otherwise, if one had chosen to do otherwise." But since one had not so chosen, and since one's choices are entirely determined by the causal chain, one could not have so chosen.
In 1948 P. H. Nowell-Smith had raised this question again, asking what libertarians thought it could mean. The second half of Campbell's 1951 article attacked Moore's hypothetical construction of meaning for "could have done otherwise only if one had chosen otherwise."
See our historical review of "could have done otherwise" from the time of Bramhall and Hobbes to the present.
Articles by C. A. Campbell
In Defence of Free Will

Is Free Will A Pseudo-Problem?

For Teachers
For Scholars
Add Campbell's Reply to J.J.C.Smart article.

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