Skepticism Quotes

“Those who can make you believe absurdities, can make you commit atrocities.”
― Voltaire

“Blind belief in authority is the greatest enemy of truth.”
― Albert Einstein

“I mean, you could claim that anything's real if the only basis for believing in it is that nobody's proved it doesn't exist!”
― J.K. Rowling

“Extraordinary claims require extraordinary evidence.”
― Carl Sagan

“Who is more humble? The scientist who looks at the universe with an open mind and accepts whatever the universe has to teach us, or somebody who says everything in this book must be considered the literal truth and never mind the fallibility of all the human beings involved?”
― Carl Sagan

“Tell people there's an invisible man in the sky who created the universe, and the vast majority will believe you. Tell them the paint is wet, and they have to touch it to be sure.”
― George Carlin

“I like the scientific spirit—the holding off, the being sure but not too sure, the willingness to surrender ideas when the evidence is against them: this is ultimately fine—it always keeps the way beyond open—always gives life, thought, affection, the whole man, a chance to try over again after a mistake—after a wrong guess.”
― Walt Whitman, Walt Whitman's Camden Conversations

“The essence of the independent mind lies not in what it thinks, but in how it thinks.”
― Christopher Hitchens, Letters to a Young Contrarian

“Men are never convinced of your reasons, of your sincerity, of the seriousness of your sufferings, except by your death. So long as you are alive, your case is doubtful; you have a right only to their skepticism.”
― Albert Camus, The Fall

“She believed in nothing. Only her scepticism kept her from being an atheist.”
― Jean-Paul Sartre

“My desire and wish is that the things I start with should be so obvious that you wonder why I spend my time stating them. This is what I aim at because the point of philosophy is to start with something so simple as not to seem worth stating, and to end with something so paradoxical that no one will believe it.”
― Bertrand Russell, The Philosophy of Logical Atomism

“The truth may be puzzling. It may take some work to grapple with. It may be counterintuitive. It may contradict deeply held prejudices. It may not be consonant with what we desperately want to be true. But our preferences do not determine what's true.”
― Carl Sagan

“I know of no society in human history that ever suffered because its people became too desirous of evidence in support of their core beliefs.”
― Sam Harris, Letter to a Christian Nation

“It's a most distressing affliction to have a sentimental heart and a skeptical mind.”
― Naguib Mahfouz, Sugar Street

“I don’t believe in astrology; I’m a Sagittarius and we’re skeptical.”
― Arthur C. Clarke

“What can be asserted without evidence can also be dismissed without evidence.”
― Christopher Hitchens, God Is Not Great: How Religion Poisons Everything

“In an extroverted society, the difference between an introvert and an extrovert is that an introvert is often unconsciously deemed guilty until proven innocent.”
― Criss Jami, Venus in Arms

“Friends ask you questions; enemies question you.”
― Criss Jami, Healology

“One good schoolmaster is of more use than a hundred priests.”
― Thomas Paine, The Age of Reason

“Tell a devout Christian that his wife is cheating on him, or that frozen yogurt can make a man invisible, and he is likely to require as much evidence as anyone else, and to be persuaded only to the extent that you give it. Tell him that the book he keeps by his bed was written by an invisible deity who will punish him with fire for eternity if he fails to accept its every incredible claim about the universe, and he seems to require no evidence what so ever.”
― Sam Harris, The End of Faith: Religion, Terror, and the Future of Reason

“The justifications of men who kill should always be heard with skepticism, said the monster.”
― Patrick Ness, A Monster Calls

“One of the biggest problems with the world today is that we have large groups of people who will accept whatever they hear on the grapevine, just because it suits their worldview—not because it is actually true or because they have evidence to support it. The really striking thing is that it would not take much effort to establish validity in most of these cases… but people prefer reassurance to research.”
― Neil deGrasse Tyson

“Don't you believe in flying saucers, they ask me? Don't you believe in telepathy? — in ancient astronauts? — in the Bermuda triangle? — in life after death?
No, I reply. No, no, no, no, and again no.
One person recently, goaded into desperation by the litany of unrelieved negation, burst out "Don't you believe in anything?"
Yes", I said. "I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how wild and ridiculous, if there is evidence for it. The wilder and more ridiculous something is, however, the firmer and more solid the evidence will have to be.”
― Isaac Asimov

“God is an ever-receding pocket of scientific ignorance.”
― Neil DeGrasse Tyson

“I have always strenuously supported the right of every man to his own opinion, however different that opinion might be to mine. He who denies to another this right, makes a slave of himself to his present opinion, because he precludes himself the right of changing it.”
― Thomas Paine, The Age of Reason

“In our reasonings concerning matter of fact, there are all imaginable degrees of assurance, from the highest certainty to the lowest species of moral evidence. A wise man, therefore, proportions his belief to the evidence.”
― David Hume, An Enquiry Concerning Human Understanding

“If Jesus rose from the dead, then you have to accept all that he said; if he didn't rise from the dead, then why worry about any of what he said? The issue on which everything hangs is not whether or not you like his teaching but whether or not he rose from the dead.”
― Timothy Keller, The Reason for God: Belief in an Age of Skepticism

“I have always felt that doubt was the beginning of wisdom, and the fear of God was the end of wisdom.”
― Clarence Darrow, The Story of My Life

“It's natural to think that living things must be the handiwork of a designer. But it was also natural to think that the sun went around the earth. Overcoming naive impressions to figure out how things really work is one of humanity's highest callings.

[Can You Believe in God and Evolution? Time Magazine, August 7, 2005]”
― Steven Pinker

“The opinions that are held with passion are always those for which no good ground exists; indeed the passion is the measure of the holders lack of rational conviction. Opinions in politics and religion are almost always held passionately.”
― Bertrand Russell, Sceptical Essays