The Ningen-sengen reference article from the English Wikipedia on 24-Apr-2004
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Ningen-sengen

Nin'gen'-sengen (人間宣言, lit. declaration of human being) in 1946 is a national radio broadcast in which Hirohito renounced his divinity and declared that Japan's sovereignty rested with the people.

His script was drafted by Reginald Horace Blyth, who also contributed in the popularization of Zen and Haiku outside Japan.

See also: Hirohito, Reginald Horace Blyth, Douglas MacArthur