Journal of the History of Philosophy

392 HISTORY OF PHILOSOPHY been aware since Book I of the Treatise how the meaning of philosophical terms was to be explicated. Hume's commentators have been understandably puzzled by his simply asserting that "cause" may be defined in two ways, without attempting to substantiate this claim by citing specific uses of "cause" in which one but not the other sense is obviously present, or by offering distinct paraphrases of ambiguous utterances. But, as is clear by now, this is not Hume's method of analysis. Thus, attention to Hume's method not only enables us to make sense of what Hume does say about "cause," it also helps explain why he did not say more. JAMES H. LESHER University of Maryland Russell, Searle, and Hamlet In his autobiography, 1 Bertrand Russell cites the quatrain z addressed to him by Ronald Searle: All earthly knowledge finally explored, Man feels himself from doubt and dogma free. There are more things in Heaven, though, my lord, Than are dreamed of in your philosophy. Russell's answer is so witty and engaging that the reader may overlook its illogic. Russell says that he dreamt of "a~," the class of all the classes not members of themselves, and that "a~" was not at the time in heaven and earth. It seems to me that Russell discovered "09" rather than created it, and that "'a~" was in heaven and earth aH along. In any case, however, Russell's statement does not refute Searle's. Russell says that he dreamt of one thing not in heaven and earth. Searle says that there are more things in heaven than Russell dreamt of. ARTHUR SARD University of California, San Diego a Autobiography o/ Bertrand Russell, 1944-1969 (London and New York, 1969), illustration facing page 97 English edition, 181 American edition; a hand written retort by Bertrand Russell. 2 Punch, March 1957, pp. 414-415. ...