(source) 
Michael P. Starbird
(10 Jul 1948  )

Science Quotes by Michael P. Starbird (2 quotes)
Michael Starbird (source)
It was a dark and stormy night, so R. H. Bing volunteered to drive some stranded mathematicians from the foggedin Madison airport to Chicago. Freezing rain pelted the windscreen and iced the roadway as Bing drove on—concentrating deeply on the mathematical theorem he was explaining. Soon the windshield was fogged from the energetic explanation. The passengers too had beaded brows, but their sweat arose from fear. As the mathematical description got brighter, the visibility got dimmer. Finally, the conferees felt a trace of hope for their survival when Bing reached forward—apparently to wipe off the moisture from the windshield. Their hope turned to horror when, instead, Bing drew a figure with his finger on the foggy pane and continued his proof—embellishing the illustration with arrows and helpful labels as needed for the demonstration.
— Michael P. Starbird
The presentation of mathematics where you start with definitions, for example, is simply wrong. Definitions aren't the places where things start. Mathematics starts with ideas and general concepts, and then definitions are isolated from concepts. Definitions occur somewhere in the middle of a progression or the development of a mathematical concept. The same thing applies to theorems and other icons of mathematical progress. They occur in the middle of a progression of how we explore the unknown.
— Michael P. Starbird
See also:
 The Heart of Mathematics: An Invitation to Effective Thinking, by Edward B. Burger and Michael Starbird.  book suggestion.