"As a rule, software systems do not work well until they have been used, and have failed repeatedly, in real applications."
"A computer once beat me at chess, but it was no match for me at kick boxing."Dave Parnas on Emo Philips
"Computers are like Old Testament gods lots of rules and no mercy."Dave Parnas on Joseph Campbell
"I think computer viruses should count as life. I think it says something about human nature that the only form of life we have created so far is purely destructive. We've created life in our own image."Dave Parnas on Stephen Hawking
"Computers are useless. They can only give you answers."Dave Parnas on Pablo Picasso
"I think it's fair to say that personal computers have become the most empowering tool we've ever created. They're tools of communication, they're tools of creativity, and they can be shaped by their user."Dave Parnas on Bill Gates
"Whenever anyone says, 'theoretically,' they really mean, 'not really.'"