To Peng Dehuai

(November 1933)

Had this book been read during the Great Revolution, mistakes would not have been made. [1]

After reading that earlier book I gave you, you knew one aspect but not the other; only after reading *"Left-Wing" Communism, an Infantile Disorder* will you understand that "Left" and Right are equally harmful. [2]

[1] This passage was written in pencil on the copy of Lenin's *Two Tactics of Social Democracy in the Democratic Revolution* sent to Peng Dehuai, who was commanding Red Army operations in western Fujian.

[2] This passage was written on the copy of Lenin's *"Left-Wing" Communism, an Infantile Disorder* sent by Mao Zedong to Peng Dehuai.