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certainty quotes

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“the one unchangeable certainty is that nothing is certain or unchangeable.” John F. Kennedy, State of the Union Address
“if a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties.” Francis Bacon, The Advancement of Learning
“Nothing gives certainty but truth; nothing gives rest but the sincere search for truth.” Blaise Pascal, Pensées
“But with regard to those few which the human intellect does understand, I believe that its knowledge equals the Divine in objective certainty, for here it succeeds in understanding necessity, beyond which there can be no greater sureness.” Galileo Galilei, Dialogue Concerning the Two Chief World Systems
“The truth of tautology is certain, of propositions possible, of contradiction impossible.” Ludwig Wittgenstein, Tractatus Logico-Philosophicus
“Doctor, you don't know what it is to doubt everything, even yourself. No, you don't, you couldn't with eyebrows like yours.” Bram Stoker, Dracula
“the history of science . . . teaches that the most we can hope for is successive improvement in our understanding, learning from our mistakes, an asymptotic approach to the Universe, but with the proviso that absolute certainty will always elude us.” Carl Sagan, The Demon-Haunted World
“There is an element in friendship which doubles its charm and renders it indissoluble—a sense of certainty which is lacking in love.” Honoré de Balzac, Lost Illusions
“If you thought before that science was certain—well, that is just an error on your part.” Richard Feynman, The Character of Physical Law
“That is the one eternal education; to be sure enough that something is true that you dare to tell it to a child.” G. K. Chesterton, What's Wrong with the World
“There’s never been a true war that wasn’t fought between two sets of people who were certain they were in the right.” Neil Gaiman, American Gods
“in this world only winter is certain.” George R. R. Martin, A Dance with Dragons
“The ancestral voices were prophesying war because ancestral voices never shut up, and they hate to be wrong, and war is a sure thing, sooner or later.” Margaret Atwood, The Blind Assassin
“Death, as the Psalmist saith, is certain to all; all shall die.” William Shakespeare, Henry IV, Part 2

Related topics

doubt truth science knowledge war love death education understanding friendship change error winter rest search righteousness tautology prophesying

Related authors

William Shakespeare (1)
George R. R. Martin (1)
Carl Sagan (1)
Neil Gaiman (1)
Blaise Pascal (1)
John F. Kennedy (1)
Francis Bacon (1)
Margaret Atwood (1)
G. K. Chesterton (1)
Bram Stoker (1)
Ludwig Wittgenstein (1)
Galileo Galilei (1)
Richard Feynman (1)
Honoré de Balzac (1)

Related sources

The Advancement of Learning (1)
State of the Union Address (1)
The Demon-Haunted World (1)
Dracula (1)
American Gods (1)
The Blind Assassin (1)
Tractatus Logico-Philosophicus (1)
A Dance with Dragons (1)
Dialogue Concerning the Two Chief World Systems (1)
Lost Illusions (1)
Pensées (1)
The Character of Physical Law (1)
What's Wrong with the World (1)
Henry IV, Part 2 (1)