He celebrated Mass in Tokyo with more than 50,000 people.
He asked to resist the temptation of technological progress without control and with enormous destructive potential.
He says nuclear weapons are a crime against the future.
“Let us speak out and insist that religious freedom be guaranteed for everyone in every part of our world. Let us also condemn the manipulation of religions,” he asked on the hill where Paul Miki and 25 other Christians were martyred.