Handwritten manuscripts, including an essay on Japan, penned by Albert Einstein during the famed physicist's visit to this nation in 1922 were disclosed to the press at Keio University on Monday.
The collection includes an eight-page draft in German, that the scientist wrote on stationery from the hotels he stayed at, letters to his longtime friend Dr. Hayari Miyake, whom he met on his journey from Europe to Japan, and messages on colored paper for Dr. Miyake written by Einstein and his wife.
Sumiko Hiki, an essayist and granddaughter of Miyake, donated the collection to the university earlier this year, on the 135th anniversary of the German genius's birth.
"Einstein's handwriting is precise and clear," said Keio German literature professor Taro Saito, who translated the writings.
"They also show Einstein's humble personality; he treated things he didn't know well with awe and respect."
On the back of the drafts are some mathematical equations that university officials say are probably part of Einstein's famed theory of relativity.
Einstein arrived in Japan in November 1922 and stayed for six weeks.
Wherever the physicist delivered speeches he was given a big welcome.
His first lecture was at Keio University, and his essay, titled "My Impressions in Japan," was published in the January 1923 issue of the magazine Kaizo.