The Kempton-Wace Letters was a 1903 epistolary novel written jointly by Americans Jack London and Anna Strunsky then based in San Francisco California. It was published anonymously.
The novel presents a discussion of the philosophy of love and sex written in the form of a series of letters between two men "Herbert Wace" a young scientist and "Dane Kempton" an elderly poet. Writer Jack London wrote "Wace's" letters and Anna Strunsky wrote "Kempton's." In the late 19th century the authors were part of a San Francisco radical literary group known as "The Crowd."
Kempton makes the case for feeling and emotion while Wace proceeds "scientifically" and analyzes love in Darwinian terms.