¹ Compare and contrast the pithy self-portrait in Livingston, David's preface to his book Philosophical Melancholy and Delirium (Chicago: University of Chicago Press, 1998)Google Scholar. “This is a study both in the history of ideas and in philosophy. It is, of course, difficult to combine the two. The former demands the Collingwoodian ideal of rethinking past thoughts as the agent understood them. The latter demands speculative judgement about reality independently of what past thinkers have thought. But in the end, both things must be done, and in the same inquiry, if there is to be such a thing as a tradition of philosophical inquiry” (p. xi).