"Richard C. Jeffrey" was an United States/American philosopher, logician, and probability theory/probability theorist. He was a native of Boston, Massachusetts.

Jeffrey served in the U.S. Navy during World War II. As a graduate student he studied under Rudolf Carnap, and Carl Hempel. He received his Master of Arts (postgraduate)/M.A. from the University of Chicago in 1952 and his Ph.D. from Princeton in 1957. After holding academic positions at MIT, City College of New York, Stanford University, and the University of Pennsylvania, he joined the faculty of Princeton University in 1974 and became a professor emeritus there in 1999. He was also a visiting professor at the University of California, Irvine.

As a philosopher, Jeffrey specialized in epistemology and decision theory. He is perhaps best known for defending and developing the Bayesianism/Bayesian approach to probability—specifically, for inventing "Jeffrey conditioning" (which he referred to as "probability kinematics"), a way of modeling the change in the probability of a proposition in light of new evidence.

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The Bank of England has to be careful that [any Y2K-related problems] don't lead to a systemic failure. It is only prudent to take such precautions, I am sure that other central banks will be doing the same.

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As 2006 progresses, it may become apparent that for a more balanced and sustainable growth profile to become established, interest rates will have to rise.

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The Bank of England will try to ensure that there are no liquidity problems that would exacerbate anything else that is going on around the millennium date change.

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