“Christianity… is an old metaphysical fiction, stuffed with fables, contradictions and absurdities: it was spawned in the fevered imagination of the Orientals, and then spread to our Europe, where some fanatics espoused it, where some intriguers pretended to be convinced by it and where some imbeciles actually believed it. Attributed in "The West and the Rest", by Niall Ferguson, Penguin 2011”
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Frederick II of Prussia 36
king of Prussia 1712–1786Related quotes
Quote from her letter of July, 1871; as quoted in her biography online at https://www.marycassatt.org/biography.html
                                        
                                        21st January 1826) Io triumphe (under the pen name Iole 
The London Literary Gazette, 1826
                                    
“There are some ideas so absurd that only an intellectual could believe them.”
                                        
                                        Possibly a paraphrase of Bertrand Russell in My Philosophical Development (1959): "This is one of those views which are so absurd that only very learned men could possibly adopt them." It is similar in meaning to Orwell's line from Notes on Nationalism (1945): "One has to belong to the intelligentsia to believe things like that: no ordinary man could be such a fool." However, Russell was commenting not on politics, as Orwell was, but on some philosophers and their ideas about language. 
Misattributed 
Variant: Some ideas are so stupid that only intellectuals believe them.
                                    
Helen in A Trojan Ending (London: Constable, 1937)
“I‘m strictly reality oriented. I don’t indulge in make-believe. I don’t wish to be where I’m not.”
2010s, 2016
                                        
                                         Out Where the West Begins http://www.cowboypoetry.com/ac.htm#OUT, st. 1. 
 Out Where the West Begins and Other Western Verses http://www.cowboypoetry.com/ac.htm#outbk (1917)