There is nothing so absurd that it cannot be believed as truth if repeated often enough.
— William James
Protection, therefore, against the tyranny of the magistrate is not enough: there needs protection also against the tyranny of the prevailing opinion and feeling; against the tendency of society to impose, by other means than civil penalties, its own ideas and practices as rules of conduct on those who dissent from them; to fetter the development, and, if possible, prevent the formation, of any individuality not in harmony with its ways, and compel all characters to fashion themselves upon the model of its own. There is a limit to the legitimate interference of collective opinion with individual independence: and to find that limit, and maintain it against encroachment, is as indispensable to a good condition of human affairs, as protection against political despotism.
— John Stuart Mill, On Liberty
“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. We have a method, and that method helps us to reach not absolute truth, only asymptotic approaches to the truth — never there, just closer and closer, always finding vast new oceans of undiscovered possibilities. Cleverly designed experiments are the key.”
— Carl Sagan
“The essence of the independent mind lies not in what it thinks, but in how it thinks...
...Beware the irrational, however seductive. Shun the "transcendent" and all who invite you to subordinate or annihilate yourself. Distrust compassion; prefer dignity for yourself and others. Don't be afraid to be thought arrogant or selfish. Picture all experts as if they were mammals. Never be a spectator of unfairness or stupidity. Seek out argument and disputation for their own sake; the grave will supply plenty of time for silence. Suspect your own motives, and all excuses. Do not live for others any more than you would expect others to live for you.”
— Christopher Hitchens, Letters to a Young Contrarian
“A man who dares to waste one hour of time has not discovered the value of his life.”
— Charles Darwin
“Once science has been established, once a scientific truth emerges from a consensus of experiments and observations, it is the way of the world… What I’m saying is, when different experiments give you the same result, it is no longer subject to your opinion. That’s the good thing about science: It’s true whether or not you believe in it. That’s why it works.”
— Neil DeGrasse Tyson
“I'm still a geek on the inside, that's the important thing.”
— Weird Al Yankovic