With best love to Aunt Kate and yourself believe me your af. bro. WM. JAMES. _To O. W. Holmes, Jr._ [A pencil memorandum, Winter of 1866-67?] Why I'm blest if I'm a Materialist: The materialist posits an X for his ultimate principle. Were he satisfied to inhabit this vacuous X, I should not at present try to disturb him. But that atmosphere is too rare; so he spends all his time on the road between it and sensible realities, engaged in the laudable pursuit of degrading every (sensibly) higher thing into a (sensibly) lower. He thus accomplishes an immensely great positively conceived and felt result, and it availeth little to naturalize the sensible impression of this that he should at the end put in his little caveat that, after all, the low denomination is as unreal as the unreduced higher ones were. In the confession of ignorance is nothing which the mind can close upon and clutch--it's a vanishing negation; while the pretension of knowledge is full of positive, massively-felt contents. The former kicks the beam. What balm is it, when instead of my High you have given me a Low, to tell me that the Low is good for nothing? If you take my $1000 gold and give me greenbacks, I feel unreconciled still, even when you have assured me that the greenbacks are counterfeit. Or what comfort is it to me now to be told that a billion years hence greenbacks and gold will have the same value? especially when that is explained to be zero? How anyone can say that this pennyworth of negation can so balance these tons of affirmation as to make the naturalist _feel_ like anyone else--I confess it's a mystery to me. But as a man's happiness depends on his feeling, I think materialism inconsistent with a high degree thereof, and in this sense maintained that a materialist should not be an optimist, using the latter word to signify one whose philosophy authenticates, by guaranteeing the objective significance of, his most pleasurable feelings. You have transferred the question of optimism to a wider field, where I can't well follow it now. The term would have to be defined first, and then I think it would take me ten or twelve years of hard study to form any opinion as to the truth of your second premise.--I send the above remarks on "materialism," because they were what I was groping for the other evening, but could not say till you were gone and I in bed. To conclude: _Corruptio optimistorum pessima!_ [Illustration: Pencil Sketch from a Pocket Note-Book.] V 1867-1868 _Eighteen Months in Germany_