From Sefer Ha-Hayim Blog:
Conventional wisdom among "those is the know" is that a classic Musar work that was enthusiastically supported by R. Yisrael Salanter, Sefer Heshbon Ha-Nefesh, is a Hebrew translation of Benjamin Franklin's memoirs. This, of course, does not diminish the utility of the book. Any book can be helpful if written with wisdom and insight, regardless of the author's identity. However, this little-known "fact" of the book's real author is somewhat jarring to those uninitiated to the secret.
The truth, however... (continued here)