“I will not vote against the truths of the multiplication table.”
                                        
                                        To H. Austin (4 February 1874) as quoted in Garfield (1978) by Allen Peskin, Ch. 17 
1870s
                                    
Hilbert-Courant (1984) by Constance Reid, p. 104
“I will not vote against the truths of the multiplication table.”
                                        
                                        To H. Austin (4 February 1874) as quoted in Garfield (1978) by Allen Peskin, Ch. 17 
1870s
                                    
Ventures in Common Sense (1919), p108.
Disme: the Art of Tenths, Or, Decimall Arithmetike (1608)
“Any problem in computer science can be solved with another level of indirection.”
                                        
                                        Attributed to David Wheeler by Butler Lampson in his  Turing Lecture https://web.archive.org/web/20070221210039/http://research.microsoft.com/Lampson/Slides/TuringLecture.doc (17 February 1993) 
Lampson uses the phrase without attribution in  Authentication in distributed systems: theory and practice https://doi.org/10.1145/138873.138874 (November 1992)
                                    
Source: Validity of the single processor approach... (1967), p. 483
“Men may keep a sort of level of good, but no man has ever been able to keep on one level of evil.”
                                        
                                        The Innocence of Father Brown (1911) The Flying Stars 
The Father Brown Mystery Series (1910 - 1927)