A bio from the back of From the Country of Eight Islands: an anthology of Japanese poetry edited & translated by Hiroaki Sato and Burton Watson:
Ishihara Yoshiro (1915-1977) A student of German and a Christian convert, he began to write poetry seriously after his experience as a prisoner of war: captured by the Soviet Army in Manchuria, he spent eight years in Siberia, released only by the general amnesty given at Stalin's death. He began to write at that time, he said, because he wanted to examine what it means to be a human being.
... to examine what it means to be a human being.
From Yoshiro's "Song of the Ringing in the Ear":
When ringing begins in my ears
he is perhaps the man that begins
but when he begins abruptly
there's another man
and all the other men that revive at a stroke.