Any given program will expand to fill all available memory.

Friends come and go but enemies accumulate.

The Ninety-Ninety Rule of Project Schedules - the first ninety percent of the task takes ninety percent of the time, and the last ten percent takes the other ninety percent.

Investment in reliability will increase until it exceeds the probable cause of errors, or until someone insists on getting some useful work done.

Every clarification breeds new questions.

First Rule of Acting: Whatever happens, look as if it were intended.

When working on a project, if you put away a tool that you're certain you're finished with, you will need it instantly.