The cenotaph carries the epitaph , which means "please rest in peace, for shall not repeat the error." In Japanese, the sentence's subject is omitted, thus it could be interpreted as either "[we shall not repeat the error" or as "shall not repeat the error". This was intended to memorialize the victims of Hiroshima without politicizing the issue, taking advantage of the fact that polite Japanese speech typically demands lexical ambiguity in the first place. The epitaph was written by Tadayoshi Saika, Professor of English Literature at Hiroshima University. He also provided the English translation, "Let all the souls here rest in peace for we shall not repeat the evil." On November 3, 1983, an explanation plaque in English was added in order to convey Professor Saika's intent that "we" refers to "all humanity", not specifically the Japanese or Americans, and that the "error" is the "evil of war":