There's another way to phrase that and that is that the absence of evidence is not the evidence of absence. It is basically saying the same thing in a different way. Simply because you do not have evidence that something does exist does not mean that you have evidence that it doesn't exist.

Don't speak ill of your predecessors or successors. You didn't walk in their shoes.

Presidential leadership needn't always cost money. Look for low- and no-cost options. They can be surprisingly effective.

Be able to resign. It will improve your value to the President and do wonders for your performance.

The reality is that [Barack] Obama has some 15 countries in the current Libya coalition. President Bush put together close to 50 countries for the Afghan coalition, some 40 countries for the Iraqi coalition, more than 90 countries for the Proliferation Security Initiative and over 90 countries in the Global War on Terror.

Politics is human beings; it's addition rather than subtraction.

No terror state poses a greater or more immediate threat to the security of our people and the stability of the world than the regime of Saddam Hussein in Iraq.