
Daniel T. Gilbert (2007) in: John Brockman. What is your dangerous idea?: today's leading thinkers on the unthinkable. Harper Perennial, 2007, p. 42
Daniel T. Gilbert (2007) in: John Brockman. What is your dangerous idea?: today's leading thinkers on the unthinkable. Harper Perennial, 2007, p. 42
“An idea that is not dangerous is unworthy of being called an idea at all.”
The Epigrams of Oscar Wilde, edited by Alvin Redman (1954)
“An idea that is not dangerous is not worthy of being called an idea at all.”
The Roycraft Dictionary and Book of Epigrams (1923)
“Yes, books are dangerous. They should be dangerous - they contain ideas.”
Source: Start with Why: How Great Leaders Inspire Everyone to Take Action
“The ancients stole all our great ideas.”
Attested at least in 1780 https://books.google.ru/books?id=nUpWAAAAYAAJ&q=Ancients&pg=PA32 (by John Hope):
Now, the Devil confound those Ancients, for they have stolen all my good thoughts from me!
Misattributed
“Danger (the spur of all great minds) is ever
The curb to your tame spirits.”
The Revenge of Bussy D'Ambois (1613), Act V, scene i.
“Mortal danger is an effective antidote for fixed ideas.”
Variant: Mortal danger is an effective antidote for fixed ideas.
Source: The Rommel Papers (1953), Ch. XI : The Initiative Passes, p. 244.
“There’s nothing more dangerous than a good idea.”
Ron English's Fauxlosophy (2016)
“Nothing is more dangerous than an idea, when you have only one idea.”
Propos sur le Religion no. 74 (1938), under the pen name Alain.
Alternate translation: “Nothing is more dangerous than an idea, when it's the only one we have.” IZQuotes https://izquotes.com/quote/%C3%A9mile-chartier/nothing-is-more-dangerous-than-an-idea-when-you-have-only-one-idea-390165 (retrieved 10/30/18).