Alfred Jules Ayer 24 quotes
Amos Oz 5 quotes
Andrei Sakharov 50 quotes
Andrew Bernstein 2 quotes
Anu Garg 19 quotes
Arthur Schopenhauer 175 quotes
Auguste Comte 17 quotes
Ayaan Hirsi Ali 26 quotes
Ayn Rand 142 quotes
B. F. Skinner 14 quotes
Barbara Ehrenreich 8 quotes
Baron d'Holbach 10 quotes
Barrett Brown 14 quotes
Bertrand Russell 480 quotes
Billy Connolly 21 quotes
Billy Joel 90 quotes
Brad Pitt 4 quotes
Bruce Lee 115 quotes
Bruce Sterling 5 quotes
Chapman Cohen 4 quotes
Charles Bradlaugh 2 quotes
Charles Péguy 12 quotes
Che Guevara 244 quotes
Chelsea Manning 8 quotes
China Miéville 26 quotes
Christian de Duve 1 quotes
Christopher Hitchens 203 quotes
Claude Adrien Helvétius 7 quotes
Claude Monet 64 quotes
Clement Attlee 22 quotes
Daniel Dennett 83 quotes
Daniel Radcliffe 39 quotes
Dave Allen 5 quotes
Dave Barry 38 quotes
David Ben-Gurion 33 quotes
David Friedman 12 quotes
David Silverman 13 quotes
Derek Jarman 3 quotes
Derren Brown 155 quotes
Dmitri Shostakovich 32 quotes
Douglas Adams 76 quotes
Ed Byrne 9 quotes
Eddie Izzard 33 quotes
Edgard Varèse 5 quotes
Eliezer Yudkowsky 43 quotes
Emma Goldman 56 quotes
Emma Thompson 6 quotes
Eric Hoffer 184 quotes
Ernest Hemingway 191 quotes
Ernestine Rose 2 quotes
Ernst Mach 20 quotes
Erwin Schrödinger 58 quotes
Fidel Castro 27 quotes
Francis Crick 10 quotes
Frank Lloyd Wright 36 quotes
Frank Zappa 86 quotes
Franz Kafka 97 quotes
Friedrich Nietzsche 338 quotes
George Bernard Shaw 274 quotes
George Carlin 93 quotes
George Gamow 14 quotes
Georges Bataille 35 quotes
Giacomo Leopardi 2 quotes
Goparaju Ramachandra Rao 11 quotes
Gore Vidal 134 quotes
Greg Egan 19 quotes
Hans Bethe 1 quotes
Hector Berlioz 9 quotes
Henri Lefebvre 13 quotes
Henri Matisse 36 quotes
Henri Poincaré 25 quotes
Henrik Ibsen 60 quotes
Henry Stephens Salt 4 quotes
Howard Bloom 40 quotes
Howard Stern 12 quotes
Hugh Everett 8 quotes
Hugh Laurie 25 quotes
Ian McEwan 9 quotes
Ira Glass 3 quotes
Isaac Asimov 119 quotes
J. Michael Straczynski 11 quotes
James Cameron (director) 9 quotes
James Frey 12 quotes
James Rachels 6 quotes
James Randi 14 quotes
Jean le Rond d'Alembert 2 quotes
Jean-Paul Sartre 225 quotes
Jeremy Bentham 19 quotes
Jim Jones 10 quotes
Jimmy Wales 44 quotes
Joanna Russ 16 quotes
Joaquin Phoenix 1 quotes
Jodie Foster 4 quotes
Johan Norberg 7 quotes
John Dewey 36 quotes
John Forbes Nash, Jr. 15 quotes
John McCarthy (computer scientist) 12 quotes
John Rawls 73 quotes
John Stuart Mill 130 quotes
José Saramago 113 quotes
Joseph Lewis 14 quotes
Joseph McCabe 10 quotes
Joseph Stalin 109 quotes
Joss Whedon 34 quotes
Karl Marx 299 quotes
Karlheinz Deschner 17 quotes
Keira Knightley 5 quotes
Konrad Zuse 3 quotes
Larry Flynt 5 quotes
Lee Daniel Crocker 5 quotes
Leon M. Lederman 6 quotes
Leon Trotsky 80 quotes
Lev Landau 3 quotes
Linus Pauling 29 quotes
Ludwig Andreas Feuerbach 33 quotes
Luis Buñuel 13 quotes
Madalyn Murray O'Hair 9 quotes
Mao Zedong 43 quotes
Marcel Proust 34 quotes
Mark Zuckerberg 2 quotes
Marquis de Sade 20 quotes
Max Stirner 44 quotes
Michael Shermer 6 quotes
Michel Foucault 61 quotes
Michelangelo Antonioni 40 quotes
Mikhail Botvinnik 1 quotes
Mikhail Gorbachev 44 quotes
Milan Kundera 71 quotes
Nazim Hikmet 18 quotes
Niall Ferguson 4 quotes
Nicky Wire 7 quotes
Niels Bohr 36 quotes
Olof Palme 4 quotes
Oscar Niemeyer 12 quotes
Pablo Picasso 45 quotes
Paul Ehrenfest 2 quotes
Penn Jillette 23 quotes
Peter Higgs 7 quotes
Peter Kropotkin 93 quotes
Peter Singer 25 quotes
Philip Pullman 80 quotes
Philip Warren Anderson 4 quotes
Pierre-Joseph Proudhon 32 quotes
Primo Levi 32 quotes
Richard Dawkins 226 quotes
Richard Feynman 184 quotes
Ricky Gervais 6 quotes
Robert M. Price 4 quotes
Rodney Dangerfield 21 quotes
Roger Penrose 9 quotes
Ron Reagan 4 quotes
Salman Rushdie 38 quotes
Sam Harris 93 quotes
Scott Clifton 8 quotes
Sergei Eisenstein 1 quotes
Sergei Prokofiev 18 quotes
Seth MacFarlane 4 quotes
Sigmund Freud 129 quotes
Stanisław Lem 52 quotes
Stephen Fry 54 quotes
Stephen Hawking 79 quotes
Steve Stewart-Williams 60 quotes
Steve Wozniak 12 quotes
Steven Novella 17 quotes
Steven Pinker 22 quotes
Steven Weinberg 17 quotes
Taslima Nasrin 3 quotes
Tom Lehrer 60 quotes
Ursula K. Le Guin 247 quotes
Vasily Zaytsev 3 quotes
Vinayak Damodar Savarkar 3 quotes
Virginia Woolf 102 quotes
Vladimir Lenin 193 quotes
Voltairine de Cleyre 59 quotes
Walter Ulbricht 3 quotes
Willard van Orman Quine 16 quotes
William Godwin 10 quotes
William Kingdon Clifford 20 quotes
William Luther Pierce 17 quotes
William Shockley 4 quotes
William Winwood Reade 24 quotes
Woody Allen 110 quotes