If it's worth fighting for, it's worth fighting dirty for.
Don't lie, cheat or steal...unnecessarily.
There is always one more son of a bitch than you counted on.
An honest answer can get you into a lot of trouble.
The facts, although interesting, are irrelevant.
Chicken little only has to be right once.
"NO" is only an interim response.
You can't kill a bad idea.
If at first you don't succeed, destroy all evidence that you ever tried.
The truth is a variable.
A porcupine with his quills down in just another fat rodent.
You can agree with any concept or notional future option, in principle, but fight implementation every step of the way.
A promise is not a guarantee.
If you can't counter the argument, leave the meeting.