To John Hall Wheelock
Via Santo Stefano Rotondo, 6,
Rome. April 17, 1952

Bertrand Russell has said to Cory that he (Russell) had no objection to what I say about his brother in “The Middle Span”; but in the third part . . . there is much more, also about himself and his philosophy, that he may not like. I should regret to seem ungrateful to two brothers to whom I owe so much.

From The Letters of George Santayana:  Book Eight, 1948–1952.  Cambridge, MA: The MIT Press, 2008.
Location of manuscript: Department of Rare Books and Special Collections, Princeton University Libraries, Princeton NJ.