Source: Math for the Layman (1999), Ch. 10, §D
Kenneth E. Iverson: Quotes about mathematics
Kenneth E. Iverson was Canadian computer scientist. Explore interesting quotes on mathematics."Kenneth E. Iverson" http://keiapl.info/rhui/autobio.htm, autobiographical sketch from an unfinished work (ca. 2004), on his experience at Harvard with "a Masters program in Automatic Data Processing in 1955; in effect, the first computer science program."
                                        
                                        §5 
Notation as a Tool of Thought (1979)
                                    
                                        
                                        §5.4 
Notation as a Tool of Thought (1979)
                                    
Source: Math for the Layman (1999), Ch. 10, §D