Politics is human beings; it's addition rather than subtraction.
Be precise. A lack of precision is dangerous when the margin of error is small.
It is unknowable how long that conflict [the war in Iraq] will last. It could last six days, six weeks. I doubt six months.
Don't blame the boss. He has enough problems.
I am not going to give you a number for it because it's not my business to do intelligent work.
It isn't making mistakes that's critical; it's correcting them and getting on with the principal task.