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.

Certainty without power can be interesting, even amusing. Certainty with power can be dangerous.

I am going to leave the future of Europe to the Europeans.

The United States, as all you know, did not come to Iraq for oil, not to occupy. We came here only to help.

Sausage making and policy-making shouldn't be seen close-up.

Visit with your predecessors from previous Administrations. They know the ropes and can help you see around some corners. Try to make original mistakes, rather than needlessly repeating theirs.

Reduce the layers of management. They put distance between the top of an organization and the customers.