Probability is expectation founded upon partial knowledge. A perfect acquaintance with all the circumstances affecting the occurrence of an event would change expectation into certainty and leave nether room nor demand for a theory of probabilities.

I feel sometimes as the renaissance man must have felt in finding new riches at every point and in the certainty that unexplored areas of knowledge and experience await at every turn.

We need to get back to reasoning and thinking things through. The future generation is being brought up in greed and without a true understanding of civics. There is no more emphasis on knowledge and time. As a society we need to process ideas and understand what certain principles are based upon.

Even if you're improvising the fact that beforehand you know certain things will work helps you make those improvisations successful. It really helps to have a certain amount of knowledge about musical structure.

One of the things that makes our military the best in the world is the certain knowledge of each soldier sailor airman and Marine that they can always count on their comrades should they need help - that they will never be abandoned.

I found it peculiar that those who wanted to take military action could - with 100 per cent certainty - know that the weapons existed and turn out to have zero knowledge of where they were.

I am not a member of any organization listed by the Attorney General as subversive. In any instance where I lent my name in the past it was certainly without knowledge that such an organization was subversive. I have always been essentially and foremost an American.

The thing with film and theater is that you always know the story so you can play certain cues in each scene with the knowledge that you know where the story's going to end and how it's going to go. But on television nobody knows what's going to happen even the writers.

I thought they may have presumed too much knowledge of certain things for people who are not comedians. Like Montreal. A comic understands what it is and its importance but someone else may not know about it.

It will be readily admitted that a degree conferred by an university ought to be a pledge to the public that he who holds it possesses a certain quantity of knowledge.

Knowledge is an unending adventure at the edge of uncertainty.

Human knowledge has been changing from the word go and people in certain respects behave more rationally than they did when they didn't have it. They spend less time doing rain dances and more time seeding clouds.

When knowledge is limited - it leads to folly... When knowledge exceeds a certain limit it leads to exploitation.

I have thought about it a great deal and the more I think the more certain I am that obedience is the gateway through which knowledge yes and love too enter the mind of the child.

Dogmatism and skepticism are both in a sense absolute philosophies one is certain of knowing the other of not knowing. What philosophy should dissipate is certainty whether of knowledge or ignorance.

My birth neither shook the German Empire nor caused much of an upheaval in the home. It pleased mother caused father a certain amount of pride and my elder brother the usual fraternal jealousy of a hitherto only son.

Jealousy lives upon doubts. It becomes madness or ceases entirely as soon as we pass from doubt to certainty.

For 13 to be unlucky would require there to be some kind of cosmic intelligence that counts things that humans count and that also makes certain things happen on certain dates or in certain places according to whether the number 13 'is involved' or not (whatever 'is involved' might mean).

I certainly believe that improving our intelligence is of important national interest.

My understanding is that what was provided was general order of battle information not operational intelligence. I certainly have no knowledge of US participation in preparing battle and strike packages and doubt strongly that that occurred.

The intelligence investigation under the leadership of Senator Church which I know has helped cause this investigation by you points out that the agencies did not disclose certain facts to us and that certain plots were going on.

We've done it in intelligence sharing and certain elements of security. There were parts of the department in fact that worked very well in Katrina like the Coast Guard and TSA.

The Germans certainly - the intelligence service believed that there were WMD. It turns out that we were all wrong probably in my judgment and that is most disturbing.

In these troubled uncertain times we don't need more command and control we need better means to engage everyone's intelligence in solving challenges and crises as they arise.