Carl Sagan (1934–1996) American astrophysicist, cosmologist, author and science educator
Source: The Demon-Haunted World : Science as a Candle in the Dark (1995), Ch. 2 : Science and Hope, p. 28
As quoted in Stalin : A Biography (2004) by Robert Service, p. 183.
1920s
Carl Sagan (1934–1996) American astrophysicist, cosmologist, author and science educator
Source: The Demon-Haunted World : Science as a Candle in the Dark (1995), Ch. 2 : Science and Hope, p. 28
Arthur C. Clarke book Dog Star
Dog Star, p. 786
2000s and posthumous publications, The Collected Stories of Arthur C. Clarke (2001)
Carl Sagan book The Demon-Haunted World
Source: The Demon-Haunted World: Science as a Candle in the Dark
“To pretend, I actually do the thing: I have therefore only pretended to pretend.”
Jacques Derrida (1930–2004) French philosopher (1930-2004)
Robert G. Ingersoll (1833–1899) Union United States Army officer
The Liberty of Man, Woman and Child (1877)
Context: Standing in the presence of the Unknown, all have the same right to think, and all are equally interested in the great questions of origin and destiny. All I claim, all I plead for, is liberty of thought and expression. That is all. I do not pretend to tell what is absolutely true, but what I think is true. I do not pretend to tell all the truth.
I do not claim that I have floated level with the heights of thought, or that I have descended to the very depths of things. I simply claim that what ideas I have, I have a right to express; and that any man who denies that right to me is an intellectual thief and robber. That is all.
Steven Weinberg (1933) American theoretical physicist
Chap. 5 : Tales of Theory and Experiment
Dreams of a Final Theory (1992; 2nd edition 1994)
Ralph Cudworth (1617–1688) English philosopher
Source: Treatise Concerning Eternal and Immutable Morality (1731), Ch. 5, sct. 7