"Every clarification breeds new questions."

"Friends come and go but enemies accumulate."

"A failure will not appear until a unit has passed final inspection."

"The compromise will always be more expensive than either of the suggestions it is compromising."

"Enough research will tend to support your conclusions."

"If you improve or tinker with something long enough, eventually it will break or malfunction."

"Don't force it, get a bigger hammer."

"A conclusion is the place where you get tired of thinking."

"Every solution breeds new problems."

"If your project doesn't work, look for the part that you didn't think was important."

"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."