We own almost all our knowledge not to those who have agreed but to those who have differed.

Sorrow is knowledge those that know the most must mourn the deepest the tree of knowledge is not the tree of life.

Ignorance more frequently begets confidence than does knowledge: it is those who know little and not those who know much who so positively assert that this or that problem will never be solved by science.

Those who have knowledge don't predict. Those who predict don't have knowledge.

Obviously in dealing with a relationship sexuality has to be involved and jealousy and emotions like that. And I don't know I've always been intrigued by those emotions.

Those who are believed to be most abject and humble are usually most ambitious and envious.

Could it be that all those reports coming from our own intelligence that Bush ignored was right all along? Could it be that the UN was right all along?

In our society those who are in reality superior in intelligence can be accepted by their fellows only if they pretend they are not.

Would it not be much better to have a president who deliberately lied to the people because he thought a war was essential than to have one who was so dumb as to be taken in by intelligence agencies especially those who told him what he wanted to hear?

When I resigned I put the U.S. Government on notice that I'm going to stick to policy issues that I have no intention of going out and blowing the cover off of the intelligence operations that those are truly sensitive and they should not be exposed.