“Quality is generally transparent when present, but easily recognized in its absence.”
Alan Gillies, Software quality: theory and management
“Any philosophic explanation of quality is going to be both false and true precisely because it is a philosophic explanation. The process of philosophic explanation is an analytic process, a process of breaking something down into subjects and predicates. What I mean (and everybody else means) by the word ‘quality’ cannot be broken down into subjects and predicates. This is not because quality is so mysterious but because quality is so simple, immediate and direct.”