"Thursday night" "Since I came back, I have read and analysed innumerable articles, prepared a number of lectures on theory of knowledge [for Harvard], made some important discoveries [see My Philosophical Development, pp. 104-5], written a long paper for a New York Philosophical Society ["The Relation of Sense Data to Physics"]—about 12,000 words—and compiled most of a lecture on the philosophy of evolution. This is five days' work. So, whatever energy you absorb, there seems a good deal left! Part of my paper I dictated to Jourdain's secretary, who does shorthand—this saved a lot of time. I don't think my brain has been more clear, or more willing to do all I ask of it, any time since 1900."

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