Ask five experts, and you'll get five different explanations (six, if one went to Harvard).
Forecasting is very difficult, especially if it's about the future.
When it is not necessary to change, it is necessary not to change.
In software development, only two of the three parameters can be defined simultaneously: task, time, and resources.
It's easy to tell when you have a bargain -- it doesn't work.
Incompetents often hire able assistants.
Don't ask the barber whether you need a haircut.
If A equals success, then the formula is A=X+Y+Z. X is work. Y is play. Z is keeping your mouth shut.
The first rule of intelligent tinkering is to save all the parts.
Nothing is often a good thing to do, and always a good thing to say.