Fonte: A Connecticut Yankee in King Arthur's Court (1889), Ch. 13.
Mark Twain: Frases em inglês (página 31)
Mark Twain era escritor, humorista e inventor norte-americano. Frases em inglês.Fonte: Autobiography of Mark Twain, Volume 1 (2010), p. 120
“He had only one vanity; he thought he could give advice better than any other person.”
"The Man That Corrupted Hadleyburg", ch. I, in The Man That Corrupted Hadleyburg and Other Stories and Essays (1900)
“No accident ever comes late; it always arrives precisely on time.”
Fonte: Autobiography of Mark Twain, Vol. 2 (2013), p. 239
                                        
                                        Vol. I, p. 2 
Mark Twain's Autobiography (1924)
                                    
“The funniest things are the forbidden.”
"Notebook 18 (February–September 1879)" in Mark Twain's Notebooks & Journals, Vol. 2 (1975), ed. Frederick Anderson, ISBN 0520025423, p. 304
“There are three kinds of lies: lies, damned lies, and statistics.”
                                        
                                        Often attributed to Twain, but he said it was attributed to Benjamin Disraeli and this itself is probably a misattribution: see Lies, damned lies, and statistics and Leonard H. Courtney. Twain did, however, popularize this saying in the United States. His attribution is in the following passage from Twain's Autobiography (1924), Vol. I, p. 246 (apparently written in Florence in 1904)  http://www.york.ac.uk/depts/maths/histstat/lies.htm: 
Figures often beguile me, particularly when I have the arranging of them myself; in which case the remark attributed to Disraeli would often apply with justice and force: "There are three kinds of lies: lies, damned lies, and statistics". 
Misattributed
                                    
                                        
                                        upon being told he had a good head for business, p. 378 
Autobiography of Mark Twain, Volume 1 (2010)
                                    
                                        
                                        originally in The Chronicle of Satan (1905). 
The Mysterious Stranger (1916)
                                    
Fonte: Autobiography of Mark Twain, Vol. 3 (2015), p. 435
                                        
                                         Chapter XLVIII, p. 344 https://babel.hathitrust.org/cgi/pt?id=coo1.ark:/13960/t0xp7k74t&view=1up&seq=364' (published 1872) 
Roughing It (1872)
                                    
Fonte: Autobiography of Mark Twain, Volume 1 (2010), p. 210
                                        
                                         Ch. XXXVIII http://www.gutenberg.org/files/5811/5811-h/5811-h.htm 
Following the Equator (1897)