"Call me Ishmael"
Herman Melville, Moby Dick 1851
"UNTESTED == BROKEN"
Schlomo Shapiro, EuroPython 2014
"Code without tests is broken by design”
Jacob Kaplan-Moss
"Everyone knows that debugging is twice as hard as writing a program in the first place. So if you're as clever as you can be when you write it, how will you ever debug it?"
Brian Kernighan, "The Elements of Programming Style", 2nd edition, chapter 2
"Pay attention to zeros. If there is a zero, someone will divide by it."
Cem Kaner
"If you don’t care about quality, you can't meet any other requirement”
Gerald M. Weinberg
"Testing shows the presence, not the absence of bugs."
Edsger W. Dijkstra
"... we have as many testers as we have developers. And testers spend all their time testing, and developers spend half their time testing. We're more of a testing, a quality software organization than we're a software organization."
Bill Gates (Information Week, May 2002)