法華経
The Soka Gakkai's history is closely intertwined with the study of the Lotus Sutra. Josei Toda began the postwar reconstruction by lecturing on the sutra, the study of which led to what Soka Gakkai considers his enlightenment (see "Life Force and Human Revolution") After the Soka Gakkai's excommunication by Nichiren Shōshū, Daisaku Ikeda conducted dialogue sessions on the Lotus Sutra which resulted in the publication of a six-volume work called "The Wisdom of the Lotus Sutra". The Soka Gakkai also sponsored the Burton Watson translation of the Lotus Sutra as well as several international exhibitions about the Lotus Sutra. Ikeda has referenced the Lotus Sutra in many of the annual peace proposals he submits to the United Nations. He compared the awakening of women mentored by Wangari Maathai to the essence of the Lotus Sutra, "a transformation from individuals seeking salvation to individuals taking action to help others free themselves from suffering."