Because one has to be an optimist to begin an ambitious project, it is not surprising that underestimation of completion time is the norm.

My definition of elegance is the achievement of a given functionality with a minimum of mechanism and a maximum of clarity.

To our dismay, users who had been enduring several hour waits between jobs run under batch processing were suddenly restless when response times were more than a second.

Regardless of whether one is dealing with assembly language or compiler language, the number of debugged lines of source code per day is about the same!

The computer field is intoxicated with change. We have seen galloping growth over a period of four decades and it still does not seem to be slowing down. The field is not mature yet and already it accounts for a significant percentage of the Gross National Product both directly and indirectly.

The use of the high level language made each programmer a factor of 5 to 10 more productive in a coding sense and more concerned with the semantics than the syntax of modules.

The general problem with ambitious systems is complexity. [...] it is important to emphasize the value of simplicity and elegance, for complexity has a way of compounding difficulties.